| Abington Friends School
| Jenkintown | PA | PK-12th | none | Coed | 708 | Quakers/Friends |
| Abraham Joshua Heschel School
| New York | NY | PK-12th | none | Coed | 716 | Jewish |
| Academy at the Lakes
| Land O'Lakes | FL | PK-12th | none | Coed | 415 | None |
| Academy of Mount St. Ursula
| Bronx | NY | 9th-12th | none | Girls only | 421 | Roman Catholic |
| Academy of Notre Dame
| Tyngsboro | MA | K-12th | none | Girls only | 750 | Roman Catholic |
| Academy of Notre Dame de Namur
4.2/5
based on 1 student review(s) | Villanova | PA | 6th-12th | none | Girls only | 539 | Roman Catholic |
| Academy of Our Lady of Mercy
| Milford | CT | 9th-12th | none | Girls only | 440 | Roman Catholic |
| Academy of Our Lady of Peace
| San Diego | CA | 9th-12th | none | Girls only | 742 | Roman Catholic |
| Academy of Saint Elizabeth
| Convent Station | NJ | 9th-12th | none | Girls only | 242 | Roman Catholic |
| Academy of the Holy Angels
| Demarest | NJ | 9th-12th | none | Girls only | 540 | Roman Catholic |
| Academy of the Holy Cross
| Kensington | MD | 9th-12th | none | Girls only | 555 | Roman Catholic |
| Academy of the Holy Names
| Tampa | FL | PK-12th | none | Girls only | 793 | Roman Catholic |
| Academy of the Holy Names
| Albany | NY | PK-12th | none | Girls only | 394 | Roman Catholic |
| Academy of the Sacred Heart
| Bloomfield Hills | MI | PK-12th | none | Coed | 602 | Roman Catholic |
| Academy of the Sacred Heart
| New Orleans | LA | PK-12th | none | Girls only | 785 | Roman Catholic |
| Agnes Irwin School
| Rosemont | PA | PK-12th | none | Girls only | 666 | None |
| Alabama Christian Academy
| Montgomery | AL | K-12th | none | Coed | 1044 | Non-Denominational Christian |
| Albany Academy
| Albany | NY | PK-12th | none | Coed | 697 | None |
| Albertus Magnus High School
| Bardonia | NY | 9th-12th | none | Coed | 451 | Roman Catholic |
| Albuquerque Academy
4.8/5
based on 3 student review(s) | Albuquerque | NM | 6th-12th | none | Coed | 1085 | None |
| Alexander Dawson School
| Lafayette | CO | K-12th | none | Coed | 420 | None |
| All Hallows High School
| New York | NY | 9th-12th | none | Boys only | 635 | Roman Catholic |
| Allendale Columbia School
| Rochester | NY | PK-12th | none | Coed | 446 | None |
| Allentown Central Catholic High School
| Allentown | PA | 9th-12th | none | Coed | 934 | Roman Catholic |
| Annie Wright School
| Tacoma | WA | PK-12th | 9th-12th | Girls only | 475 | Episcopal |
| Aquinas Academy
| Gibsonia | PA | PK-12th | none | Coed | 295 | Roman Catholic |
| Archbishop Curley High School
| Baltimore | MD | 9th-12th | none | Boys only | 560 | Roman Catholic |
| Archbishop John Carroll High School
| Radnor | PA | 9th-12th | none | Coed | 977 | Roman Catholic |
| Archbishop Molloy High School
| New York City | NY | 9th-12th | none | Coed | 1529 | Roman Catholic |
| Archbishop O'Hara High School
| Kansas City | MO | 9th-12th | none | Coed | 454 | Roman Catholic |
| Archbishop Prendergast High School
| Drexel Hill | PA | 9th-12th | none | Coed | 1297 | Roman Catholic |
| Archbishop Shaw High School
| Marrero | LA | 8th-12th | none | Boys only | 550 | Roman Catholic |
| Archbishop Stepinac High School
| White Plains | NY | 9th-12th | none | Boys only | 685 | Roman Catholic |
| Archbishop Williams High School
| Braintree | MA | 9th-12th | none | Coed | 530 | Roman Catholic |
| Archbishop Wood High School
| Warminster | PA | 9th-12th | none | Coed | 1079 | Roman Catholic |
| Archer School for Girls
| Los Angeles | CA | 6th-12th | none | Girls only | 500 | None |
| Archmere Academy
| Claymont | DE | 9th-12th | none | Coed | 505 | Roman Catholic |
| Arlington Catholic High School
| Arlington | MA | 9th-12th | none | Coed | 755 | Roman Catholic |
| Army and Navy Academy
| Carlsbad | CA | 7th-12th | 7th-12th | Boys only | 339 | None |
| Asheville School
4.7/5
based on 5 student review(s) | Asheville | NC | 9th-12th | 9th-12th | Coed | 250 | None |
| Ashley Hall
| Charleston | SC | PK-12th | none | Girls only | 650 | None |
| Athenian School
4.9/5
based on 2 student review(s) | Danville | CA | 6th-12th | 9th-12th | Coed | 450 | None |
| Athens Academy
| Athens | GA | PK-12th | none | Coed | 875 | None |
| Atlanta International School
| Atlanta | GA | PK-12th | none | Coed | 1018 | None |
| Augusta Preparatory Day School
| Marinez | GA | PK-12th | none | Coed | 554 | None |
| Avon Old Farms School
| Avon | CT | 9th-12th | 9th-12th | Boys only | 405 | None |
| Awty International School
| Houston | TX | PK-12th | none | Coed | 1135 | None |
| Baldwin School
4.4/5
based on 1 student review(s) | Bryn Mawr | PA | PK-12th | none | Girls only | 556 | None |
| Baltimore Lutheran School
| Towson | MD | 6th-12th | none | Coed | 397 | Roman Catholic |
| Bancroft School
| Worcester | MA | K-12th | none | Coed | 557 | None |
| Barrie School
| Silver Spring | MD | PK-12th | none | Coed | 375 | None |
| Barstow School
| Kansas City | MO | PK-12th | none | Coed | 632 | None |
| Battle Ground Academy
| Franklin | TN | K-12th | none | Coed | 960 | None |
| Bayshore Christian School
| Tampa | FL | PK-12th | none | Coed | 351 | Methodist |
| Bear Creek School
| Redmond | WA | K-12th | none | Coed | 683 | Non-Denominational Christian |
| Beaumont School
| Cleveland Heights | OH | 9th-12th | none | Girls only | 460 | Roman Catholic |
| Beaver Country Day School
3.2/5
based on 1 student review(s) | Chestnut Hill | MA | 6th-12th | none | Coed | 418 | None |
| Belmont Hill School
5/5
based on 1 student review(s) | Belmont | MA | 7th-12th | 9th-12th | Boys only | 420 | None |
| Ben Lippen School
| Columbia | SC | PK-12th | 6th-12th | Coed | 777 | Non-Denominational Christian |
| Benedictine Academy
| Elizabeth | NJ | 9th-12th | none | Girls only | 190 | Roman Catholic |
| Benedictine High School
| Cleveland | OH | 9th-12th | none | Boys only | 425 | Roman Catholic |
| Benet Academy
| Lisle | IL | 9th-12th | none | Coed | 1290 | Roman Catholic |
| Benjamin School
4.6/5
based on 2 student review(s) | Palm Beach Gardens | FL | PK-12th | none | Coed | 1300 | None |
| Bentley School
3.8/5
based on 1 student review(s) | Oakland | CA | K-12th | none | Coed | 677 | None |
| Berkeley Carroll School
4/5
based on 1 student review(s) | Brooklyn | NY | PK-12th | none | Coed | 800 | None |
| Berkeley Preparatory School
| Tampa | FL | PK-12th | none | Coed | 1200 | Episcopal |
| Berkshire School
| Sheffield | MA | 9th-PG | 9th-PG | Coed | 371 | None |
| Bethlehem Academy
| Faribault | MN | 7th-12th | none | Coed | 200 | Roman Catholic |
| Bethlehem Catholic High School
| Bethlehem | PA | 9th-12th | none | Coed | 777 | Roman Catholic |
| Birch Wathen Lenox School
| New York | NY | K-12th | none | Coed | 550 | None |
| Bishop Brady High School
| Concord | NH | 9th-12th | none | Coed | 369 | Roman Catholic |
| Bishop Guertin High School
| Nashua | NH | 9th-12th | none | Coed | 886 | Roman Catholic |
| Bishop Canevin High School
| Pittsburgh | PA | 9th-12th | none | Coed | 462 | Roman Catholic |
| Bishop Carroll High School
| Ebensburg | PA | 9th-12th | none | Coed | 240 | Roman Catholic |
| Bishop Connolly High School
| Fall River | MA | 9th-12th | none | Coed | 274 | Roman Catholic |
| Bishop Dwenger High School
| Fort Wayne | IN | 9th-12th | none | Coed | 1067 | Roman Catholic |
| Bishop Feehan High School
4.1/5
based on 2 student review(s) | Attleboro | MA | 9th-12th | none | Coed | 1049 | Roman Catholic |
| Bishop Fenwick High School
| Peabody | MA | 9th-12th | none | Coed | 614 | Roman Catholic |
| Bishop Gorman High School
| Las Vegas | NV | 9th-12th | none | Coed | 1053 | Roman Catholic |
| Bishop Guilfoyle Catholic High School
| Altoona | PA | 9th-12th | none | Coed | 396 | Roman Catholic |
| Bishop Hendricken High School
| Warwick | RI | 9th-12th | none | Boys only | 950 | Roman Catholic |
| Bishop Ireton High School
| Alexandria | VA | 9th-12th | none | Coed | 806 | Roman Catholic |
| Bishop Kearney High School
| Rochester | NY | 6th-12th | none | Girls only | 447 | Roman Catholic |
| Bishop Kelly High School
| Boise | ID | 9th-12th | none | Coed | 627 | Roman Catholic |
| Bishop Loughlin Memorial High School
| Brooklyn | NY | 9th-12th | none | Coed | 880 | Roman Catholic |
| Bishop McCort High School
| Johnstown | PA | 9th-12th | none | Coed | 408 | Roman Catholic |
| Bishop McDevitt High School
| Wyncote | PA | 9th-12th | none | Coed | 668 | Roman Catholic |
| Bishop McNamara High School
| Forestville | MD | 9th-12th | none | Coed | 871 | Roman Catholic |
| Bishop Moore Catholic High School
| Orlando | FL | 9th-12th | none | Coed | 1113 | Roman Catholic |
| Bishop Shanahan High School
| Downingtown | PA | 9th-12th | none | Coed | 1264 | Roman Catholic |
| Bishop Stang High School
| North Dartmouth | MA | 9th-12th | none | Coed | 815 | Roman Catholic |
| Bishop Walsh School
| Cumberland | MD | K-12th | none | Coed | 490 | Roman Catholic |
| Bishop Watterson High School
| Columbus | OH | 9th-12th | none | Coed | 1151 | Roman Catholic |
| Bishop's School
4.9/5
based on 2 student review(s) | La Jolla | CA | 7th-12th | none | Coed | 780 | Episcopal |
| Blair Academy
4.8/5
based on 3 student review(s) | Blairstown | NJ | 9th-12th | 9th-PG | Coed | 442 | Presbyterian |
| Blake School
| Hopkins | MN | PK-12th | none | Coed | 1316 | None |
| Blanchet Catholic School
| Salem | OR | 7th-12th | none | Coed | 395 | Roman Catholic |
| Blessed Sacrament Huguenot Catholic School
| Powhatan | VA | PK-12th | none | Coed | 538 | Roman Catholic |
| Blue Mountain Academy
| Hamburg | PA | 9th-12th | none | Coed | 215 | Adventists |
| Bob Jones Academy
| Greenville | SC | 9th-12th | 9th-12th | Coed | 513 | Non-Denominational Christian |
| Boca Raton Christian School
| Boca Raton | FL | PK-12th | none | Coed | 610 | Non-Denominational Christian |
| Bolles School
| Jacksonville | FL | PK-12th | 7th-PG | Coed | 1730 | None |
| Bosque School
| Albuquerque | NM | 6th-12th | none | Coed | 548 | None |
| Boston College High School
| Boston | MA | 7th-12th | none | Boys only | 1543 | Roman Catholic (Jesuit) |
| Boston Trinity Academy
| Boston | MA | 6th-12th | none | Coed | 215 | Non-Denominational Christian |
| Boston University Academy
4/5
based on 1 student review(s) | Boston | MA | 9th-12th | none | Coed | 158 | None |
| Boyd-Buchanan School
| Chattanooga | TN | PK-12th | none | Coed | 934 | Non-Denominational Christian |
| Boys' Latin School of Maryland
| Baltimore | MD | K-12th | none | Boys only | 600 | None |
| Bradenton Christian School
| Bradenton | FL | PK-12th | none | Coed | 591 | Non-Denominational Christian |
| Branson School
| Ross | CA | 9th-12th | none | Coed | 310 | None |
| Brearley School
4.4/5
based on 1 student review(s) | New York | NY | K-12th | none | Girls only | 692 | Non-Denominational Christian |
| Brebeuf Jesuit Preparatory School
| Indianapolis | IN | 9th-12th | none | Coed | 809 | Roman Catholic (Jesuit) |
| Breck School
| Minneapolis | MN | PK-12th | none | Coed | 1209 | Episcopal |
| Brentwood Academy
| Bentwood | TN | 6th-12th | none | Coed | 782 | Non-Denominational Christian |
| Brewster Academy
| Wolfeboro | NH | 9th-PG | 9th-PG | Coed | 360 | None |
| Brimmer and May School
| Chestnut Hill | MA | PK-12th | none | Coed | 390 | None |
| Brookfield Academy
| Brookfield | WI | PK-12th | none | Coed | 884 | None |
| Brooklyn Friends School
| Brooklyn | NY | PK-12th | none | Coed | 700 | Quakers/Friends |
| Brooks School
| North Andover | MA | 9th-12th | 9th-12th | Coed | 370 | Episcopal |
| Brookstone School
| Columbus | GA | PK-12th | none | Coed | 840 | None |
| Brophy College Preparatory
| Pheonix | AZ | 9th-12th | none | Boys only | 1260 | Roman Catholic |
| Brother Rice High School
| Bloomfield Hills | MI | 9th-12th | none | Boys only | 710 | Roman Catholic |
| Brownell-Talbot School
| Omaha | NE | PK-12th | none | Coed | 465 | None |
| Browning School
| New York | NY | K-12th | none | Boys only | 388 | None |
| Brunswick School
| Greenwich | CT | PK-12th | none | Boys only | 940 | None |
| Bryn Mawr School
| Baltimore | MD | PK-12th | none | Girls only | 776 | None |
| Buckingham Browne and Nichols School
4.9/5
based on 2 student review(s) | Cambridge | MA | PK-12th | none | Coed | 1009 | None |
| Buckley School
| Sherman Oaks | CA | K-12th | none | Coed | 750 | None |
| Buffalo Seminary
| Buffalo | NY | 9th-12th | 9th-12th | Girls only | 180 | None |
| Bullis School
| Potomac | MD | K-12th | none | Coed | 828 | None |
| Calhoun School
| New York | NY | PK-12th | none | Coed | 742 | None |
| Calverton School
| Huntingtown | MD | PK-12th | none | Coed | 420 | None |
| Cambridge Christian School
| Tampa | FL | PK-12th | none | Coed | 664 | Non-Denominational Christian |
| Cambridge School of Weston
| Weston | MA | 9th-12th | 9th-12th | Coed | 330 | None |
| Campbell Hall
4.3/5
based on 3 student review(s) | North Hollywood | CA | K-12th | none | Coed | 1090 | Episcopal |
| Canisius High School
| Buffalo | NY | 9th-12th | none | Boys only | 823 | Roman Catholic (Jesuit) |
| Cannon School
| Concord | NC | PK-12th | none | Coed | 913 | None |
| Canterbury High School
4.4/5
based on 1 student review(s) | Fort Wayne | IN | PK-12th | none | Coed | 913 | None |
| Canterbury School
4/5
based on 1 student review(s) | New Milford | CT | 9th-PG | 9th-PG | Coed | 380 | Roman Catholic |
| Canterbury School of Florida
| St. Petersburg | FL | PK-12th | none | Coed | 431 | Episcopal |
| Cape Cod Academy
| Osterville | MA | K-12th | none | Coed | 320 | None |
| Cape Fear Academy
| Wilmington | NC | PK-12th | none | Coed | 652 | None |
| Cape Henry Collegiate School
| Virginia Beach | VA | PK-12th | none | Coed | 1020 | None |
| Cardinal Mooney High School
| Youngstown | OH | 9th-12th | none | Coed | 618 | Roman Catholic |
| Cardinal Newman High School
| West Palm Beach | FL | 9th-12th | none | Coed | 879 | Roman Catholic |
| Cardinal O'Hara High School
| Springfield | PA | 9th-12th | none | Coed | 1527 | Roman Catholic |
| Cardinal Spellman High School
| Brockton | MA | 9th-12th | none | Coed | 679 | Roman Catholic |
| Carolina Friends School
| Durham | NC | PK-12th | none | Coed | 487 | Quakers/Friends |
| Carrollton School of the Sacred Heart
| Miami | FL | PK-12th | none | Girls only | 655 | Roman Catholic |
| Casady School
| Oklahoma City | OK | PK-12th | none | Coed | 847 | Episcopal |
| Cascia Hall Preparatory School
| Tulsa | OK | 6th-12th | none | Coed | 579 | Roman Catholic |
| Castilleja School
| Palo Alto | CA | 6th-12th | none | Girls only | 415 | None |
| Cate School
4.7/5
based on 5 student review(s) | Carpinteria | CA | 9th-12th | 9th-12th | Coed | 260 | None |
| Cathedral High School
| Springfield | MA | 9th-12th | none | Coed | 491 | Roman Catholic |
| Cathedral High School
| Boston | MA | 9th-12th | none | Coed | 260 | Roman Catholic |
| Cathedral Preparatory School
| Erie | PA | 9th-12th | none | Boys only | 557 | Roman Catholic |
| Cathedral Preparatory Seminary
| Elmhurst | NY | 9th-12th | none | Boys only | 178 | Roman Catholic |
| Catherine Mcauley High School
| Portland | ME | 9th-12th | none | Girls only | 200 | Roman Catholic |
| Catholic High School
| Baton Rouge | LA | 8th-12th | none | Boys only | 993 | Roman Catholic |
| Catholic High School of Baltimore
| Baltimore | MD | 9th-12th | none | Girls only | 314 | Roman Catholic |
| Catholic Memorial School
| West Roxbury | MA | 7th-12th | none | Boys only | 805 | Roman Catholic |
| Central Arkansas Christian School
| North Little Rock | AR | PK-12th | none | Coed | 1971 | Non-Denominational Christian |
| Central Catholic High School
| Lawrence | MA | 9th-12th | none | Coed | 1340 | Roman Catholic |
| Central Catholic High School
| Pittsburgh | PA | 9th-12th | none | Boys only | 861 | Roman Catholic |
| Central Catholic High School
| Modesto | CA | 9th-12th | none | Coed | 441 | Roman Catholic |
| Central Catholic High School
| Portland | OR | 9th-12th | none | Coed | 870 | Roman Catholic |
| Chadwick School
| Palos Verdes Peninsula | CA | K-12th | none | Coed | 826 | None |
| Chaminade High School
4.4/5
based on 1 student review(s) | Mineola | NY | 9th-12th | none | Boys only | 1650 | Roman Catholic |
| Chapelgate Christian Academy
| Marriottsville | MD | 6th-12th | none | Coed | 400 | Presbyterian |
| Chapin School
| New York | NY | K-12th | none | Girls only | 728 | None |
| Charles E. Smith Jewish Day School
| Rockville | MD | K-12th | none | Coed | 1514 | Jewish |
| Charles Wright Academy
4.6/5
based on 1 student review(s) | Tacoma | WA | PK-12th | none | Coed | 725 | None |
| Charlotte Catholic High School
| Charlotte | NC | 9th-12th | none | Coed | 1374 | Roman Catholic |
| Charlotte Christian School
| Charlotte | NC | PK-12th | none | Coed | 1018 | Non-Denominational Christian |
| Charlotte Country Day School
| Charlotte | NC | PK-12th | none | Coed | 1637 | None |
| Charlotte Latin School
| Charlotte | NC | PK-12th | none | Coed | 1369 | None |
| Chase Collegiate School
| Waterbury | CT | PK-12th | none | Coed | 451 | None |
| Chatham Hall
| Chatham | VA | 9th-12th | 9th-12th | Girls only | 131 | Episcopal |
| Chattanooga Christian School
| Chattanooga | TN | K-12th | none | Coed | 1100 | Non-Denominational Christian |
| Cheshire Academy
3.2/5
based on 1 student review(s) | Cheshire | CT | 6th-PG | 9th-PG | Coed | 378 | None |
| Chestnut Hill Academy
| Philadelphia | PA | PK-12th | none | Coed | 570 | None |
| Choate Rosemary Hall
4.6/5
based on 10 student review(s) | Wallingford | CT | 9th-PG | 9th-PG | Coed | 830 | None |
| Christ Church Episcopal School
| Greenville | SC | K-12th | none | Coed | 953 | Episcopal |
| Christ School
| Arden | NC | 8th-12th | 8th-12th | Boys only | 248 | Episcopal |
| Christian Brothers Academy
| Lincroft | NJ | 9th-12th | none | Boys only | 937 | Roman Catholic |
| Christian Heritage School
| Trumbull | CT | K-12th | none | Coed | 450 | Non-Denominational Christian |
| Christopher Dock Mennonite High School
| Lansdale | PA | 9th-12th | none | Coed | 385 | Mennonite |
| Cincinnati Country Day School
| Cincinnati | OH | PK-12th | none | Coed | 800 | None |
| Cistercian Preparatory School
| Irving | TX | 5th-12th | none | Boys only | 343 | Roman Catholic |
| Coe-Brown Northwood Academy
| Northwood | NH | 9th-12th | none | Coed | 707 | None |
| College Preparatory School
4.8/5
based on 2 student review(s) | Oakland | CA | 9th-12th | none | Coed | 335 | None |
| Collegiate School
| New York | NY | K-12th | none | Boys only | 630 | None |
| Collegiate School
| Richmond | VA | K-12th | none | Coed | 1562 | None |
| Colorado Academy
| Denver | CO | 1st-12th | none | Coed | 910 | None |
| Colorado Rocky Mountain School
| Carbondale | CO | 9th-12th | 9th-12th | Coed | 155 | None |
| Columbia Academy
| Columbia | TN | PK-12th | none | Coed | 710 | Non-Denominational Christian |
| Columbia Adventist Academy
| Battleground | WA | 9th-12th | none | Coed | 117 | Adventists |
| Columbus Academy
| Gahanna | OH | PK-12th | none | Coed | 1052 | None |
| Columbus School for Girls
| Columbus | OH | PK-12th | none | Girls only | 647 | None |
| Commonwealth School
| Boston | MA | 9th-12th | none | Coed | 150 | None |
| Community School of Idaho
| Sun Valley | ID | PK-12th | 9th-12th | Coed | 315 | None |
| Community School of Naples
| Naples | FL | PK-12th | none | Coed | 798 | None |
| Concord Academy
4.6/5
based on 2 student review(s) | Concord | MA | 9th-12th | 9th-12th | Coed | 363 | None |
| Concordia Lutheran High School
| Fort Wayne | IN | 9th-12th | none | Coed | 648 | Lutheran |
| Connelly School of the Holy Child
| Potomac | MD | 6th-12th | none | Girls only | 382 | Roman Catholic |
| Convent of the Sacred Heart
| Greenwich | CT | PK-12th | none | Girls only | 748 | Roman Catholic |
| Convent of the Sacred Heart
3.8/5
based on 1 student review(s) | New York | NY | PK-12th | none | Girls only | 670 | Roman Catholic |
| Convent Visitation School
| Mendota Heights | MN | PK-12th | none | Coed | 598 | Roman Catholic |
| Conwell-Egan Catholic High School
| Fairless Hills | PA | 9th-12th | none | Coed | 825 | Roman Catholic |
| Cor Jesu Academy
| St. Louis | MO | 9th-12th | none | Girls only | 580 | Roman Catholic |
| Cornelia Connelly School
| Anaheim | CA | 9th-12th | none | Girls only | 313 | Roman Catholic |
| Cotter School
| Winona | MN | 7th-12th | 9th-12th | Coed | 428 | Roman Catholic |
| Country Day School of the Sacred Heart
| Bryn Mawr | PA | PK-12th | none | Girls only | 359 | Roman Catholic |
| Covenant School
| Charlottesville | VA | PK-12th | 9th-12th | Coed | 710 | Non-Denominational Christian |
| Covington Catholic High School
| Park Hills | KY | 9th-12th | none | Boys only | 502 | Roman Catholic |
| Coyle and Cassidy High School
| Taunton | MA | 9th-12th | none | Coed | 649 | Roman Catholic |
| Cranbrook Schools
4.5/5
based on 5 student review(s) | Bloomfield Hills | MI | PK-12th | 9th-12th | Coed | 1620 | None |
| Crescent City Christian School
| Metarie | LA | PK-12th | none | Coed | 520 | Non-Denominational Christian |
| Crossroads College Preparatory School
| St. Louis | MO | 7th-12th | none | Coed | 210 | None |
| Crossroads School
| Santa Monica | CA | K-12th | none | Coed | 1129 | None |
| Crystal Springs Uplands School
4.4/5
based on 2 student review(s) | Hillsborough | CA | 6th-12th | none | Coed | 350 | None |
| Culver Academies
4.5/5
based on 3 student review(s) | Culver | IN | 9th-PG | 9th-PG | Coed | 775 | None |
| Cushing Academy
3.2/5
based on 1 student review(s) | Ashburnham | MA | 9th-PG | 9th-PG | Coed | 445 | None |
| Cuyahoga Valley Christian Academy
| Cuyahoga Falls | OH | 7th-12th | none | Coed | 837 | Non-Denominational Christian |
| Dade Christian School
| Miami | FL | PK-12th | none | Coed | 1294 | Baptist |
| Dalton School
4.6/5
based on 8 student review(s) | New York | NY | K-12th | none | Coed | 1280 | None |
| Dana Hall School
4.6/5
based on 1 student review(s) | Wellesley | MA | 6th-12th | 9th-12th | Girls only | 460 | None |
| Darlington School
| Rome | GA | PK-12th | 9th-12th | Coed | 911 | None |
| David Lipscomb Campus School
| Nashville | TN | PK-12th | none | Coed | 1375 | Non-Denominational Christian |
| De La Salle Collegiate High School
| Warren | MI | 9th-12th | none | Boys only | 873 | Roman Catholic |
| De La Salle High School
| Minneapolis | MN | 9th-12th | none | Coed | 630 | Roman Catholic |
| De La Salle Institute
| Chicago | IL | 9th-12th | none | Coed | 1215 | Roman Catholic |
| De Smet Jesuit High School
| St. Louis | MO | 9th-12th | none | Boys only | 1114 | Roman Catholic (Jesuit) |
| Deerfield Academy
4.5/5
based on 10 student review(s) | Deerfield | MA | 9th-PG | 9th-PG | Coed | 630 | None |
| Deerfield-Windsor School
| Albany | GA | PK-12th | none | Coed | 820 | None |
| Delbarton School
4.8/5
based on 2 student review(s) | Morristown | NJ | 7th-12th | none | Coed | 550 | Roman Catholic |
| Delone Catholic High School
| McSherrystown | PA | 9th-12th | none | Coed | 500 | Roman Catholic |
| Delphian School
| Sheridan | OR | K-12th | 7th-12th | Coed | 260 | None |
| DeMatha Catholic High School
| Hyattsville | MD | 9th-12th | none | Boys only | 1012 | Roman Catholic |
| Denver Jewish Day School
| Denver | CO | K-12th | none | Coed | 366 | Jewish |
| Derryfield School
| Manchester | NH | 6th-12th | none | Coed | 383 | None |
| Detroit Country Day School
4.4/5
based on 1 student review(s) | Beverly Hills | MI | PK-12th | none | Coed | 1600 | None |
| Devon Preparatory School
| Devon | PA | 6th-12th | none | Boys only | 295 | Roman Catholic |
| Dexter School
| Brookline | MA | PK-12th | none | Boys only | 434 | None |
| Doane Academy
| Burlington | NJ | PK-12th | none | Coed | 195 | Episcopal |
| Doane Stuart School
| Rensselaer | NY | PK-12th | none | Coed | 265 | Episcopal |
| Dominican Academy
| New York | NY | 9th-12th | none | Coed | 248 | Roman Catholic |
| Dominican High School
| Whitefish Bay | WI | 9th-12th | none | Coed | 386 | Roman Catholic |
| Donna Klein Jewish Academy
| Boca Raton | FL | K-12th | none | Coed | 702 | Jewish |
| Dowling High School
| West Des Moines | IA | 9th-12th | none | Coed | 1150 | Roman Catholic |
| Drew School
| San Francisco | CA | 9th-12th | none | Coed | 250 | None |
| Dublin School
| Dublin | NH | 9th-12th | 9th-12th | Coed | 153 | None |
| Dubois Area Catholic School
| Du Bois | PA | PK-12th | none | Coed | 509 | Roman Catholic |
| Duchesne Academy of the Sacred Heart
| Houston | TX | PK-12th | none | Girls only | 665 | Roman Catholic |
| Dwight-Englewood School
| Englewood | NJ | PK-12th | none | Coed | 1007 | None |
| East Catholic High School
| Manchester | CT | 9th-12th | none | Coed | 684 | Roman Catholic |
| Elk County Catholic High School
| St. Marys | PA | 9th-12th | none | Coed | 289 | Roman Catholic |
| Ellis School
| Pittsburg | PA | PK-12th | none | Girls only | 470 | None |
| Emma Willard School
5/5
based on 1 student review(s) | Troy | NY | 9th-PG | 9th-PG | Girls only | 320 | None |
| Episcopal Academy
4.7/5
based on 3 student review(s) | Newtown Square | PA | PK-12th | none | Coed | 1250 | Episcopal |
| Episcopal High School
| Baton Rouge | LA | K-12th | none | Coed | 1064 | Episcopal |
| Episcopal High School of Jacksonville
3.6/5
based on 1 student review(s) | Jacksonville | FL | 6th-12th | none | Coed | 900 | Episcopal |
| Episcopal High School
| Bellaire | TX | 9th-12th | none | Coed | 658 | Episcopal |
| Episcopal School of Dallas
| Dallas | TX | PK-12th | none | Coed | 1136 | Episcopal |
| Episcopal School of Texas
| San Antonio | TX | 6th-12th | 9th-12th | Coed | 337 | Episcopal |
| Erskine Academy
| South China | ME | 9th-12th | none | Coed | 747 | None |
| Ethel Walker School
4.6/5
based on 1 student review(s) | Simsbury | CT | 6th-12th | 9th-12th | Girls only | 269 | None |
| Ethical Culture Fieldston School
4.8/5
based on 2 student review(s) | Bronx | NY | PK-12th | none | Coed | 1600 | None |
| Evangelical Christian School
| Cordova | TN | PK-12th | none | Coed | 1525 | Evangelical |
| Fairfield College Preparatory School
| Fairfield | CT | 9th-12th | none | Boys only | 925 | Roman Catholic (Jesuit) |
| Fairmont School
| Anaheim | CA | PK-12th | none | Coed | 2230 | None |
| Faith Christian Academy
| Sellersville | PA | PK-12th | none | Coed | 300 | Baptist |
| Faith Heritage School
| Syracuse | NY | PK-12th | none | Coed | 500 | None |
| Faith Lutheran High School
| Las Vegas | NV | 6th-12th | none | Coed | 1241 | Lutheran |
| Falmouth Academy
| Falmouth | MA | 7th-12th | none | Coed | 190 | None |
| Father Judge High School
| Philadelphia | PA | 9th-12th | none | Boys only | 1293 | Roman Catholic |
| Father Ryan High School
| Nashville | TN | 9th-12th | none | Coed | 907 | Roman Catholic |
| Fayetteville Academy
| Fayetteville | NC | PK-12th | none | Coed | 421 | None |
| Fenwick High School
| Oak Park | IL | 9th-12th | none | Coed | 1152 | Roman Catholic |
| Field School
| Washington | DC | 7th-12th | none | Coed | 320 | None |
| Fishburne Military School
| Waynesboro | VA | 8th-12th | 8th-12th | Boys only | 200 | None |
| Flintridge Sacred Heart Academy
| La Canada Flingtridge | CA | 9th-12th | 9th-12th | Girls only | 411 | Roman Catholic |
| Fontbonne Academy
| Milton | MA | 9th-12th | none | Girls only | 367 | Roman Catholic |
| Fordham Preparatory School
| Bronx | NY | 9th-12th | none | Boys only | 919 | Roman Catholic (Jesuit) |
| Fork Union Military Academy
| Fork Union | VA | 6th-PG | 6th-PG | Boys only | 475 | Baptist |
| Fort Worth Christian School
| North Richland Hills | TX | PK-12th | none | Coed | 810 | None |
| Fort Worth Country Day School
| Fort Worth | TX | K-12th | none | Coed | 1125 | None |
| Fountain Valley School of Colorado
4.9/5
based on 2 student review(s) | Colorado Springs | CO | 9th-12th | 9th-12th | Coed | 244 | None |
| Foxcroft Academy
3.8/5
based on 1 student review(s) | Dover Foxcroft | ME | 9th-12th | 9th-12th | Coed | 439 | None |
| Foxcroft School
| Middleburg | VA | 9th-12th | 9th-12th | Girls only | 178 | None |
| Francis Parker School
| San Diego | CA | PK-12th | none | Coed | 1210 | None |
| Francis W. Parker School
| Chicago | IL | PK-12th | none | Coed | 901 | None |
| Franklin Road Academy
| Nashville | TN | PK-12th | none | Coed | 935 | None |
| Friends Academy
| Locust Valley | NY | PK-12th | none | Coed | 748 | Quakers/Friends |
| Friends School of Baltimore
| Baltimore | MD | PK-12th | none | Coed | 976 | Quakers/Friends |
| Friends Select School
4.2/5
based on 1 student review(s) | Philadelphia | PA | PK-12th | none | Coed | 530 | Quakers/Friends |
| Friends Seminary
| New York | NY | K-12th | none | Coed | 670 | Quakers/Friends |
| Friends' Central School
| Wyndmoor | PA | PK-12th | none | Coed | 981 | Quakers/Friends |
| Friendship Christian School
| Lebanon | TN | PK-12th | none | Coed | 661 | Non-Denominational Christian |
| Fuqua School
| Farmville | VA | PK-12th | none | Coed | 522 | None |
| Galloway School
| Atlanta | GA | PK-12th | none | Coed | 715 | None |
| Garrison Forest School
| Owings Mills | MD | PK-12th | 8th-12th | Girls only | 696 | None |
| Geibel Catholic High School
| Connellsville | PA | 7th-12th | none | Coed | 193 | Roman Catholic |
| George School
3.8/5
based on 1 student review(s) | Newtown | PA | 9th-12th | 9th-12th | Coed | 530 | Quakers/Friends |
| Georgetown Day School
4.9/5
based on 2 student review(s) | Washington | DC | PK-12th | none | Coed | 1030 | None |
| Georgetown Preparatory School
4.8/5
based on 1 student review(s) | North Bethesda | MD | 9th-12th | 9th-12th | Boys only | 480 | Roman Catholic (Jesuit) |
| Georgetown Visitation Preparatory School
5/5
based on 1 student review(s) | Washington | DC | 9th-12th | none | Girls only | 484 | Roman Catholic |
| Germantown Academy
4.8/5
based on 1 student review(s) | Fort Washington | PA | PK-12th | none | Coed | 1120 | None |
| Germantown Friends School
4.1/5
based on 6 student review(s) | Philadephia | PA | K-12th | none | Coed | 861 | Quakers/Friends |
| Gill St. Bernard's School
| Gladstone | NJ | PK-12th | none | Coed | 676 | None |
| Gilman School
| Baltimore | MD | 1st-12th | none | Boys only | 1012 | None |
| Girls Preparatory School
| Chattanooga | TN | 6th-12th | none | Girls only | 702 | None |
| Glenelg Country School
| Ellicott City | MD | PK-12th | none | Coed | 806 | None |
| Golda Och Academy
| West Orange | NH | PK-12th | none | Coed | 800 | Jewish |
| Gonzaga College High School
4.8/5
based on 1 student review(s) | Washington | DC | 9th-12th | none | Boys only | 930 | Roman Catholic (Jesuit) |
| Gonzaga Preparatory School
| Spokane | WA | 9th-12th | none | Coed | 900 | Roman Catholic |
| Gould Academy
| Bethel | ME | 9th-PG | 9th-PG | Coed | 240 | None |
| Governor's Academy
| Byfield | MA | 9th-12th | 9th-12th | Coed | 372 | None |
| Grace Brethren Christian School
| Clinton | MD | PK-12th | none | Coed | 648 | Non-Denominational Christian |
| Grace Christian School
| Anchorage | AK | K-12th | none | Coed | 668 | Non-Denominational Christian |
| Grand Rapids Christian Schools
| Grand Rapids | MI | PK-12th | none | Coed | 2933 | Non-Denominational Christian |
| Greater Atlanta Christian School
| Norcross | GA | PK-12th | none | Coed | 1946 | None |
| Green Meadow Waldorf School
| Chestnut Ridge | NY | PK-12th | none | Coed | 382 | None |
| Greenhill School
| Addison | TX | PK-12th | none | Coed | 1248 | None |
| Greenhills School
| Ann Arbor | MI | 6th-12th | none | Coed | 515 | None |
| Greens Farms Academy
4.6/5
based on 1 student review(s) | Greens Farms | CT | K-12th | none | Coed | 685 | None |
| Greensboro Day School
4.4/5
based on 2 student review(s) | Greensboro | NC | PK-12th | none | Coed | 920 | None |
| Greensburg Central Catholic High School
| Greensburg | PA | 9th-12th | none | Coed | 492 | Roman Catholic |
| Greenwich Academy
| Greenwich | CT | PK-12th | none | Girls only | 802 | None |
| Groton School
4.5/5
based on 6 student review(s) | Groton | MA | 8th-12th | 8th-12th | Coed | 370 | Episcopal |
| Gulliver Schools
| Pinecrest | FL | PK-12th | none | Coed | 2093 | None |
| Gunnery School
3.6/5
based on 1 student review(s) | Washington | CT | 9th-PG | 9th-PG | Coed | 300 | None |
| Gwynedd-Mercy College
| Gwynedd Valley | PA | 9th-12th | none | Girls only | 402 | Roman Catholic |
| Hackley School
| Tarrytown | NY | K-12th | 9th-12th | Coed | 833 | None |
| Hamden Hall Country Day School
| Hamden | CT | PK-12th | none | Coed | 565 | None |
| Hammond School
| Columbia | SC | PK-12th | none | Coed | 978 | None |
| Hampton Roads Academy
| Newport News | VA | PK-12th | none | Coed | 675 | None |
| Harding Academy
| Memphis | TN | PK-12th | none | Coed | 1276 | None |
| Harford Christian School
| Darlington | MD | PK-12th | none | Coed | 415 | Methodist |
| Hargrave Military Academy
| Chatham | VA | 7th-PG | 7th-PG | Boys only | 400 | None |
| Harker School
4.3/5
based on 6 student review(s) | San Jose | CA | K-12th | none | Coed | 1700 | None |
| Harley School
| Rochester | NY | PK-12th | none | Coed | 516 | None |
| Harpeth Hall School
| Nashville | TN | 5th-12th | none | Girls only | 625 | None |
| Harrells Christian Academy
| Harrells | NC | K-12th | none | Coed | 495 | None |
| Harrisburg Academy
| Wormleysburg | PA | PK-12th | none | Coed | 425 | None |
| Harvard-Westlake School
4.6/5
based on 7 student review(s) | North Hollywood | CA | 7th-12th | none | Coed | 1600 | Episcopal |
| Harvey School
| Katonah | NY | 6th-12th | 7th-12th | Coed | 336 | None |
| Hathaway Brown School
| Shaker Heights | OH | PK-12th | none | Girls only | 830 | None |
| Haverford School
3.8/5
based on 3 student review(s) | Haverford | PA | PK-12th | none | Boys only | 960 | None |
| Hawaii Preparatory Academy
| Kamuela | HI | K-12th | 6th-12th | Coed | 585 | None |
| Hawken School
| Gates Mills | OH | PK-12th | none | Coed | 959 | None |
| Head-Royce School
| Oakland | CA | K-12th | none | Coed | 800 | None |
| Heathwood Hall Episcopal School
| Columbia | SC | PK-12th | none | Coed | 760 | Episcopal |
| Heights School
| Potomac | MD | 3rd-12th | none | Boys only | 458 | Roman Catholic |
| Heritage Hall School
| Oklahoma City | OK | PK-12th | none | Coed | 832 | None |
| Hewitt School
| New York | NY | K-12th | none | Girls only | 506 | None |
| Highland View Academy
| Hagerstown | MD | 9th-12th | none | Coed | 115 | Adventists |
| Hill School
4.4/5
based on 5 student review(s) | Pottstown | PA | 9th-PG | 9th-PG | Coed | 485 | None |
| Hillcrest Lutheran Academy
| Fergus Falls | MN | 7th-12th | 10th-12th | Coed | 197 | Lutheran |
| Hockaday School
4/5
based on 1 student review(s) | Dallas | TX | PK-12th | 8th-12th | Girls only | 1085 | None |
| Holderness School
| Plymouth | NH | 9th-PG | 9th-PG | Coed | 280 | Episcopal |
| Holland Hall School
| Tulsa | OK | PK-12th | none | Coed | 984 | Episcopal |
| Holton-Arms School
| Bethesda | MD | 3rd-12th | none | Girls only | 645 | None |
| Holy Cross High School
| Delran | NJ | 9th-12th | none | Coed | 770 | Roman Catholic |
| Holy Cross High School
| Waterbury | CT | 9th-12th | none | Coed | 760 | Roman Catholic |
| Holy Cross School
| New Orleans | LA | 5th-12th | none | Boys only | 940 | Roman Catholic |
| Holy Family High School
| Broomfield | CO | 9th-12th | none | Coed | 565 | Roman Catholic |
| Holy Ghost Preparatory School
| Bensalem | PA | 9th-12th | none | Boys only | 503 | Roman Catholic |
| Holy Name Central Catholic High School
| Worcester | MA | 7th-12th | none | Coed | 707 | Roman Catholic |
| Holy Names Academy
| Seattle | WA | 9th-12th | none | Girls only | 675 | Roman Catholic |
| Holy Names High School
| Oakland | CA | 9th-12th | none | Girls only | 240 | Roman Catholic |
| Holy Spirit Preparatory School
| Atlanta | GA | PK-12th | none | Coed | 735 | Roman Catholic |
| Holy Trinity Episcopal Academy
| Melbourne | FL | PK-12th | none | Coed | 952 | Episcopal |
| Holy Trinity High School
| Chicago | IL | 9th-12th | none | Coed | 420 | Roman Catholic |
| Holyoke Catholic High School
| Chicopee | MA | 9th-12th | none | Coed | 302 | Roman Catholic |
| Hopkins School
5/5
based on 2 student review(s) | New Haven | CT | 7th-12th | none | Coed | 681 | None |
| Horace Mann School
4.4/5
based on 6 student review(s) | Bronx | NY | PK-12th | none | Coed | 1781 | None |
| Hotchkiss School
4.5/5
based on 4 student review(s) | Lakeville | CT | 9th-PG | 9th-PG | Coed | 560 | None |
| Houghton Academy
| Houghton | NY | 7th-12th | 9th-PG | Coed | 170 | Other |
| Houston Academy
| Dothan | AL | PK-12th | none | Coed | 632 | None |
| Hudson School
| Hoboken | NJ | 5th-12th | none | Coed | 204 | None |
| Hun School of Princeton
4.2/5
based on 2 student review(s) | Princeton | NJ | 6th-PG | 9th-PG | Coed | 585 | None |
| Hutchison School
| Memphis | TN | PK-12th | none | Girls only | 826 | None |
| Hyde Park Schools
| Austin | TX | K-12th | none | Coed | 762 | Baptist |
| Hyde School Bath
| Bath | ME | 9th-12th | 9th-12th | Coed | 138 | None |
| Hyde School Woodstock
| Woodstock | CT | 9th-PG | 9th-PG | Coed | 189 | None |
| Idyllwild Arts Academy
| Idyllwid | CA | 8th-PG | 9th-PG | Coed | 266 | None |
| Immaculate Conception Academy
| San Francisco | CA | 9th-12th | none | Girls only | 255 | Roman Catholic |
| Immaculate High School
| Danbury | CT | 9th-12th | none | Coed | 406 | Roman Catholic |
| Incarnate Word Academy
| St. Louis | MO | 9th-12th | none | Girls only | 584 | Roman Catholic |
| Incarnate Word Academy
| Corpus Christi | TX | PK-12th | none | Coed | 745 | Roman Catholic |
| Independent School
| Wichita | KS | PK-12th | none | Coed | 750 | None |
| Indian Creek School
| Crownsville | MD | PK-12th | none | Coed | 633 | None |
| Indian Springs School
| Indian Springs | AL | 8th-12th | 9th-12th | Coed | 300 | None |
| Institute of Notre Dame
| Baltimore | MD | 9th-12th | none | Girls only | 318 | Roman Catholic |
| International Christian High School
| Philadelphia | PA | 8th-12th | none | Coed | 124 | Non-Denominational Christian |
| International School of Minnesota
| Eden Prairie | MN | PK-12th | none | Coed | 551 | None |
| Iolani School
| Honolulu | HI | K-12th | none | Coed | 1840 | None |
| Iona Preparatory School
| New Rochelle | NY | 9th-12th | none | Boys only | 770 | Roman Catholic |
| Isidore Newman School
| New Orleans | LA | PK-12th | none | Coed | 1016 | None |
| Jesuit College Preparatory School
| Dallas | TX | 9th-12th | none | Boys only | 1030 | Roman Catholic (Jesuit) |
| Jesuit High School
| Carmichael | CA | 9th-12th | none | Boys only | 1080 | Roman Catholic (Jesuit) |
| Jesuit High School
| Tampa | FL | 9th-12th | none | Boys only | 645 | Roman Catholic (Jesuit) |
| Jesuit High School
| New Orleans | LA | 8th-12th | none | Boys only | 1388 | Roman Catholic (Jesuit) |
| Jesuit High School
| Portland | OR | 9th-12th | none | Coed | 1150 | Roman Catholic (Jesuit) |
| John Burroughs School
5/5
based on 3 student review(s) | St. Louis | MO | 7th-12th | none | Coed | 590 | None |
| John Carroll School
| Bel Air | MD | 9th-12th | none | Coed | 827 | Roman Catholic |
| John Cooper School
| The Woodlands | TX | PK-12th | none | Coed | 950 | None |
| John F. Kennedy Catholic High School
| Manchester | MO | 9th-12th | none | Coed | 400 | Roman Catholic |
| John F. Kennedy Catholic High School
| Somers | NY | 9th-12th | none | Coed | 665 | Roman Catholic |
| John W. Hallahan Catholic Girls' High School
| Philadelphia | PA | 9th-12th | none | Girls only | 650 | Roman Catholic |
| Junipero Serra School
| Gardena | CA | 9th-12th | none | Coed | 686 | Roman Catholic |
| Jupiter Christian School
| Jupiter | FL | PK-12th | none | Coed | 655 | Non-Denominational Christian |
| Kehillah Jewish High School
| Palo Alto | CA | 9th-12th | none | Coed | 110 | Jewish |
| Kent Denver School
| Englewood | CO | 6th-12th | none | Coed | 674 | None |
| Kent Place School
| Summit | NJ | PK-12th | none | Girls only | 655 | None |
| Kent School
4.9/5
based on 3 student review(s) | Kent | CT | 9th-PG | 9th-PG | Coed | 564 | Episcopal |
| Kentucky Country Day School
| Louisville | KY | PK-12th | none | Coed | 902 | None |
| Keswick Christian School
| St. Petersburg | FL | PK-12th | none | Coed | 648 | Non-Denominational Christian |
| Kew-Forest School
| Forest Hill | NY | K-12th | none | Coed | 385 | None |
| Key School
4.7/5
based on 3 student review(s) | Annapolis | MD | PK-12th | none | Coed | 716 | None |
| Kimball Union Academy
2.6/5
based on 1 student review(s) | Meriden | NH | 9th-PG | 9th-PG | Coed | 344 | None |
| King Low Heywood Thomas
| Stamford | CT | PK-12th | none | Coed | 648 | None |
| King's Academy
| Seymour | TN | PK-12th | 6th-12th | Coed | 403 | Southern Baptist |
| Kingswood Oxford School
| West Hartford | CT | 6th-PG | none | Coed | 496 | None |
| Kinkaid School
4.6/5
based on 1 student review(s) | Houston | TX | PK-12th | none | Coed | 1280 | None |
| Kiski School
| Saltburg | PA | 9th-PG | 9th-PG | Boys only | 215 | None |
| Knox School
| St. James | NY | 6th-12th | 7th-12th | Coed | 121 | None |
| Kolbe Cathedral High School
| Bridgeport | CT | 9th-12th | none | Coed | 308 | Roman Catholic |
| La Jolla Country Day School
| La Jolla | CA | PK-12th | none | Coed | 1053 | None |
| La Lumiere School
| La Porte | IN | 9th-PG | 9th-PG | Coed | 131 | Roman Catholic |
| La Salle Academy
| Providence | RI | 7th-12th | none | Coed | 1479 | Roman Catholic |
| La Salle College High School
| Wyndmoor | PA | 9th-12th | none | Boys only | 1060 | Roman Catholic |
| La Salle High School
| Miami | FL | 9th-12th | none | Coed | 630 | Roman Catholic |
| La Salle Institute
| Troy | NY | 6th-12th | none | Boys only | 600 | Roman Catholic |
| La Verne Lutheran High School
| La Verne | CA | 9th-12th | none | Coed | 179 | Lutheran |
| Ladywood High School
| Livonia | MI | 9th-12th | none | Girls only | 450 | Roman Catholic |
| Laguna Blanca School
| Santa Barbara | CA | K-12th | none | Coed | 425 | None |
| Lake Forest Academy
| Lake Forest | IL | 9th-12th | 9th-12th | Coed | 321 | None |
| Lake Highland Preparatory School
| Orlando | FL | PK-12th | none | Coed | 1917 | None |
| Lake Mary Preparatory School
| Lake Mary | FL | PK-12th | none | Coed | 640 | Non-Denominational Christian |
| Lake Ridge Academy
| North Ridgeville | OH | K-12th | none | Coed | 352 | None |
| Lakehill Preparatory School
| Dallas | TX | K-12th | none | Coed | 400 | None |
| Lakeside Lutheran High School
| Lake Mills | WI | 9th-12th | none | Coed | 489 | Lutheran |
| Lakeside School
4.8/5
based on 1 student review(s) | Seattle | WA | 5th-12th | none | Coed | 775 | None |
| Lancaster Country Day School
| Lancaster | PA | PK-12th | none | Coed | 530 | None |
| Lancaster Mennonite School
| Lancaster | PA | PK-12th | none | Coed | 789 | Mennonite |
| Landmark Christian School
| Fairburn | GA | PK-12th | none | Coed | 782 | Non-Denominational Christian |
| Landon School
4.4/5
based on 3 student review(s) | Bethesda | MD | 3rd-12th | none | Boys only | 679 | None |
| Lansdale Catholic High School
| Lansdale | PA | 9th-12th | none | Coed | 814 | Roman Catholic |
| Lansing Catholic Central High School
| Lansing | MI | 9th-12th | none | Coed | 523 | Roman Catholic |
| Latin School of Chicago
| Chicago | IL | PK-12th | none | Coed | 1105 | None |
| Laurel School
| Shaker Heights | OH | PK-12th | none | Girls only | 624 | None |
| Lausanne Collegiate School
| Memphis | TN | PK-12th | none | Coed | 762 | None |
| Lawrence Academy
| Groton | MA | 9th-12th | 9th-12th | Coed | 398 | None |
| Lawrenceville School
4.6/5
based on 21 student review(s) | Lawrenceville | NJ | 9th-PG | 9th-PG | Coed | 800 | None |
| Le Jardin Academy
| Kailua | HI | PK-12th | none | Coed | 780 | None |
| Lebanon Catholic School
| Lebanon | PA | PK-12th | none | Coed | 365 | Roman Catholic |
| Lee Academy
| Lee | ME | 9th-PG | 9th-PG | Coed | 253 | None |
| Lick-Wilmerding High School
4.6/5
based on 2 student review(s) | San Francisco | CA | 9th-12th | none | Coed | 425 | None |
| Lincoln Academy
| Newcastle | ME | 9th-12th | none | Coed | 554 | None |
| Lincoln School
| Providence | RI | PK-12th | none | Girls only | 380 | Quakers/Friends |
| Linden Hall
| Lititz | PA | 6th-PG | 6th-PG | Girls only | 125 | None |
| Linsly School
| Wheeling | WV | 5th-12th | 7th-12th | Coed | 420 | None |
| Little Flower Catholic High School for Girls
| Philadelphia | PA | 9th-12th | none | Girls only | 737 | Roman Catholic |
| Little Red School House and Elisabeth Irwin High School
| New York | NY | PK-12th | none | Coed | 560 | None |
| Long Island Lutheran High School
| Brookville | NY | 6th-12th | none | Coed | 609 | Lutheran |
| Loomis Chaffee School
4.1/5
based on 4 student review(s) | Windsor | CT | 9th-PG | 9th-PG | Coed | 672 | None |
| Louise S. McGehee School
| New Orleans | LA | PK-12th | none | Girls only | 490 | None |
| Lovett School
| Atlanta | GA | K-12th | none | Coed | 1560 | None |
| Loyola Academy
| Wilmette | IL | 9th-12th | none | Coed | 2000 | Roman Catholic |
| Loyola Blakefield
| Towson | MD | 6th-12th | none | Boys only | 1000 | Roman Catholic (Jesuit) |
| Loyola High School
| Los Angeles | CA | 9th-12th | none | Boys only | 1250 | Roman Catholic (Jesuit) |
| Loyola Sacred Heart High School
| Missoula | MT | 9th-12th | none | Coed | 196 | Roman Catholic |
| Loyola School
| New York | NY | 9th-12th | none | Coed | 205 | Roman Catholic |
| Lutheran High School
| Indianapolis | IN | 9th-12th | none | Coed | 300 | Lutheran |
| Lutheran West High School
| Rocky River | OH | 9th-12th | none | Coed | 450 | Lutheran |
| Lyndon Institute
| Lyndon Center | VT | 9th-12th | 9th-12th | Coed | 617 | None |
| MacDuffie School
| Springfield | MA | 6th-12th | 9th-12th | Coed | 190 | None |
| Maclay School
4.2/5
based on 1 student review(s) | Tallahassee | FL | PK-12th | none | Coed | 1000 | None |
| Madeira School
| McLean | VA | 9th-12th | 9th-12th | Girls only | 318 | None |
| Madison Academy
| Madison | AL | PK-12th | none | Coed | 785 | Non-Denominational Christian |
| Magnificat High School
| Rocky River | OH | 9th-12th | none | Girls only | 875 | Roman Catholic |
| Maimonides School
| Brookline | MA | PK-12th | none | Coed | 589 | Jewish |
| Malden Catholic High School
| Malden | MA | 9th-12th | none | Boys only | 764 | Roman Catholic |
| Malvern Preparatory School
| Malvern | PA | 6th-12th | none | Boys only | 597 | Roman Catholic |
| Manlius Pebble Hill School
| Dewitt | NY | PK-PG | none | Coed | 594 | None |
| Maranatha Christian Academy
| Brooklyn Park | MN | PK-12th | none | Coed | 720 | Non-Denominational Christian |
| Maret School
4.2/5
based on 2 student review(s) | Washington | DC | K-12th | none | Coed | 600 | None |
| Marian Catholic High School
| Chicago Heights | IL | 9th-12th | none | Coed | 1550 | Roman Catholic |
| Marian High School
| Framingham | MA | 9th-12th | none | Coed | 264 | Roman Catholic |
| Marianapolis Preparatory School
| Thompson | CT | 9th-PG | 9th-PG | Coed | 320 | Roman Catholic |
| Marin Academy
| San Rafael | CA | 9th-12th | none | Coed | 404 | None |
| Marist School
| Atlanta | GA | 7th-12th | none | Coed | 1071 | Roman Catholic |
| Marlborough School
4.8/5
based on 1 student review(s) | Los Angeles | CA | 7th-12th | none | Girls only | 537 | None |
| Marquette University High School
| Milwaukee | WI | 9th-12th | none | Boys only | 1050 | Roman Catholic (Jesuit) |
| Mars Hill Bible School
| Florence | AL | PK-12th | none | Coed | 633 | Non-Denominational Christian |
| Marshall School
| Duluth | MN | 5th-12th | none | Coed | 472 | None |
| Martin Luther High School
| Maspeth | NY | 9th-12th | none | Coed | 350 | Lutheran |
| Marvelwood School
| Kent | CT | 9th-12th | 9th-12th | Coed | 170 | None |
| Mary Institute and Saint Louis Country Day School
4.7/5
based on 4 student review(s) | St. Louis | MO | PK-12th | none | Coed | 1220 | None |
| Mary Louis Academy
| Jamaica Estates | NY | 9th-12th | none | Girls only | 992 | Roman Catholic |
| Maryknoll School
| Honolulu | HI | PK-12th | none | Coed | 1400 | Roman Catholic |
| Marymount High School
| Los Angeles | CA | 9th-12th | none | Girls only | 415 | Roman Catholic |
| Marymount School of NY
| New York | NY | PK-12th | none | Girls only | 565 | Roman Catholic |
| Maryvale Preparatory School
| Brooklandville | MD | 6th-12th | none | Girls only | 376 | Roman Catholic |
| Massanutten Military Academy
| Woodstock | VA | 7th-PG | 7th-PG | Coed | 169 | None |
| Masters School
| Dobbs Ferry | NY | 5th-12th | 9th-12th | Coed | 560 | None |
| Matignon High School
| Cambridge | MA | 9th-12th | none | Coed | 377 | Roman Catholic |
| Maumee Valley Country Day School
| Toledo | OH | PK-12th | none | Coed | 470 | None |
| Mayer Lutheran High School
| Mayer | MN | 9th-12th | none | Coed | 236 | Lutheran |
| Mayfield Senior School
| Pasadena | CA | 9th-12th | none | Girls only | 313 | Roman Catholic |
| McCallie School
| Chattanooga | TN | 6th-12th | 9th-12th | Boys only | 890 | None |
| McCurdy Mission School
| Espanola | NM | PK-12th | none | Coed | 333 | Methodist |
| McDonogh School
4/5
based on 1 student review(s) | Owings Mills | MD | K-12th | 9th-12th | Coed | 1292 | None |
| McLean School
| Potomac | MD | K-12th | none | Coed | 472 | None |
| McQuaid Jesuit High School
| Rochester | NY | 7th-12th | none | Boys only | 875 | Roman Catholic (Jesuit) |
| Meadows School
| Las Vegas | NV | PK-12th | none | Coed | 910 | None |
| Memphis University School
| Memphis | TN | 7th-12th | none | Boys only | 643 | None |
| Menaul School
| Albuquerque | NM | 6th-12th | none | Coed | 200 | Presbyterian |
| Menlo School
5/5
based on 1 student review(s) | Atherton | CA | 6th-12th | none | Coed | 775 | None |
| Mercersburg Academy
4.2/5
based on 4 student review(s) | Mercersburg | PA | 9th-12th | 9th-PG | Coed | 440 | None |
| Mercy High School
| Middletown | CT | 9th-12th | none | Girls only | 700 | Roman Catholic |
| Mercy High School
| Farmington Hills | MI | 9th-12th | none | Girls only | 843 | Roman Catholic |
| Mercyhurst Preparatory School
| Erie | PA | 9th-12th | none | Coed | 595 | Roman Catholic |
| Merion Mercy Academy
| Merion Station | PA | 9th-12th | none | Girls only | 485 | Roman Catholic |
| Metairie Park Country Day School
| Metarie | LA | PK-12th | none | Coed | 614 | None |
| Miami Country Day School
| Miami | FL | PK-12th | none | Coed | 1000 | None |
| Michigan Lutheran High School
| Saginaw | MI | 9th-12th | 9th-12th | Coed | 234 | Lutheran |
| Mid-Pacific Institute
| Honolulu | HI | PK-12th | none | Coed | 1515 | None |
| Middleburg Academy
| Middleburg | VA | 9th-12th | none | Coed | 172 | None |
| Middlesex School
4.5/5
based on 4 student review(s) | Concord | MA | 9th-12th | 9th-12th | Coed | 394 | None |
| Millbrook School
| Millbrook | NY | 9th-12th | 9th-12th | Coed | 252 | None |
| Milo Adventist Academy
| Days Creek | OR | 9th-12th | 9th-12th | Coed | 135 | Adventists |
| Milton Academy
4.6/5
based on 6 student review(s) | Milton | MA | K-12th | 9th-12th | Coed | 990 | None |
| Minnehaha Academy
| Minneapolis | MN | PK-12th | none | Coed | 1209 | Other |
| Miss Hall's School
| Pittsfield | MA | 9th-PG | 9th-PG | Girls only | 195 | None |
| Miss Porter's School
4.1/5
based on 4 student review(s) | Farmington | CT | 9th-12th | 9th-12th | Girls only | 333 | None |
| MMI Preparatory School
| Freeland | PA | 6th-12th | none | Coed | 248 | None |
| Monsignor Bonner High School
| Drexel Hill | PA | 9th-12th | none | Boys only | 1282 | Roman Catholic |
| Montclair Kimberley Academy
| Montclair | NJ | PK-12th | none | Coed | 1046 | None |
| Monte Vista Christian School
| Watsonville | CA | 9th-12th | 9th-12th | Coed | 832 | None |
| Montgomery Academy
| Montgomery | AL | K-12th | none | Coed | 846 | None |
| Montgomery Bell Academy
| Nashville | TN | 7th-12th | none | Boys only | 670 | None |
| Montini Catholic High School
| Lombard | IL | 9th-12th | none | Coed | 653 | Roman Catholic |
| Montrose School
| Medfield | MA | 6th-12th | none | Girls only | 194 | Roman Catholic |
| Montverde Academy
| Monverde | FL | PK-12th | 7th-12th | Coed | 431 | None |
| Moorestown Friends School
| Mooretown | NJ | PK-12th | none | Coed | 724 | Quakers/Friends |
| Moses Brown School
| Providence | RI | PK-12th | none | Coed | 785 | Quakers/Friends |
| Mount Assisi Academy
| Lemont | IL | 9th-12th | none | Girls only | 315 | Roman Catholic |
| Mount Carmel Academy
| New Orleans | LA | 8th-12th | none | Girls only | 1335 | Roman Catholic |
| Mount De Sales Academy
| Macon | GA | 6th-12th | none | Coed | 690 | Roman Catholic |
| Mount Michael Benedictine School
| Elkhorn | NE | 9th-12th | 9th-12th | Boys only | 169 | Roman Catholic |
| Mount Saint Charles Academy
| Woonsocket | RI | 7th-12th | none | Coed | 1000 | Roman Catholic |
| Mount Saint Joseph Academy
| Boston | MA | 9th-12th | none | Girls only | 225 | Roman Catholic |
| Mount Saint Joseph Academy
| Flourtown | PA | 9th-12th | none | Girls only | 560 | Roman Catholic |
| Mount Saint Joseph Academy
| Rutland | VT | 9th-12th | none | Coed | 147 | Roman Catholic |
| Mount St. Mary Academy
| Little Rock | AR | 9th-12th | none | Girls only | 560 | Roman Catholic |
| Mount Vernon Presbyterian School
| Atlanta | GA | PK-12th | none | Coed | 726 | Presbyterian |
| Mount Alvernia High School
| Newton | MA | 7th-12th | none | Girls only | 220 | Roman Catholic |
| Nardin Academy
| Buffalo | NY | PK-12th | none | Coed | 962 | Roman Catholic |
| National Cathedral School
3.6/5
based on 1 student review(s) | Washington | DC | 4th-12th | none | Girls only | 580 | Episcopal |
| Nativity BVM High School
| Pottsville | PA | 9th-12th | none | Coed | 199 | Roman Catholic |
| Nazareth Academy High School
| Philadelphia | PA | 9th-12th | none | Girls only | 415 | Roman Catholic |
| Nerinx Hall High School
| Webster Groves | MO | 9th-12th | none | Coed | 619 | Roman Catholic |
| New Hampton School
| New Hampton | NH | 9th-PG | 9th-PG | Coed | 300 | None |
| New Life Academy
| Woodbury | MN | PK-12th | none | Coed | 640 | Non-Denominational Christian |
| New York Military Academy
| Cornwall-on-Hudson | NY | 7th-12th | 7th-12th | Coed | 141 | None |
| Newark Academy
4.6/5
based on 2 student review(s) | Linvingston | NJ | 6th-12th | none | Coed | 555 | None |
| Newman School
| Boston | MA | 9th-PG | none | Coed | 230 | None |
| Newton Country Day School of the Sacred Heart
| Newton | MA | 5th-12th | none | Girls only | 394 | Roman Catholic |
| Nichols School
| Buffalo | NY | 5th-12th | none | Coed | 560 | None |
| Nightingale-Bamford School
| New York | NY | PK-12th | none | Girls only | 550 | None |
| Noble and Greenough School
4.5/5
based on 2 student review(s) | Dedham | MA | 7th-12th | 9th-12th | Coed | 585 | None |
| Nolan Catholic High School
| Fort Worth | TX | 9th-12th | none | Coed | 1089 | Roman Catholic |
| Norfolk Academy
5/5
based on 1 student review(s) | Norfolk | VA | 1st-12th | none | Coed | 1229 | None |
| North Cambridge Catholic High School
| Cambridge | MA | 9th-12th | none | Coed | 260 | Roman Catholic |
| North Catholic High School
| Pittsburgh | PA | 9th-12th | none | Coed | 250 | Roman Catholic |
| North Cobb High School
| Kennesaw | GA | 3rd-12th | none | Coed | 850 | Non-Denominational Christian |
| North Cross School
| Roanoke | VA | PK-12th | none | Coed | 500 | None |
| North Yarmouth Academy
| Yarmouth | ME | 6th-12th | none | Coed | 302 | None |
| Northfield Mount Hermon School
4.2/5
based on 9 student review(s) | Mount Hermon | MA | 9th-PG | 9th-PG | Coed | 650 | None |
| Northside Christian Academy
| Charlotte | NC | PK-12th | none | Coed | 884 | Baptist |
| Northwest Academy
| Portland | OR | 6th-12th | none | Coed | 116 | None |
| Northwest Catholic High School
| West Hartford | CT | 9th-12th | none | Coed | 653 | Roman Catholic |
| Northwest School
| Seattle | WA | 6th-12th | 9th-12th | Coed | 460 | None |
| Northwood School
| Lake Placid | NY | 9th-PG | 9th-PG | Coed | 172 | None |
| Notre Dame Academy
| Los Angeles | CA | 9th-12th | none | Girls only | 440 | Roman Catholic |
| Notre Dame Academy
| Hingham | MA | 9th-12th | none | Girls only | 600 | Roman Catholic |
| Notre Dame Academy
| Park Hills | KY | 9th-12th | none | Girls only | 595 | Roman Catholic |
| Notre Dame Academy
| Staten Island | NY | PK-12th | none | Girls only | 380 | Roman Catholic |
| Notre Dame Academy
| Toledo | OH | 7th-12th | none | Girls only | 750 | Roman Catholic |
| Notre Dame Academy
| Worcester | MA | 9th-12th | none | Girls only | 300 | Roman Catholic |
| Notre Dame Catholic High School
| Fairfield | CT | 9th-12th | none | Coed | 500 | Roman Catholic |
| Notre Dame College Prep
| Niles | IL | 9th-12th | none | Boys only | 830 | Roman Catholic |
| Notre Dame de la Baie Academy
| Green Bay | WI | 9th-12th | none | Coed | 730 | Roman Catholic |
| Notre Dame High School
| Batavia | NY | 9th-12th | none | Coed | 195 | Roman Catholic |
| Notre Dame High School
| Belmont | CA | 9th-12th | none | Girls only | 600 | Roman Catholic |
| Notre Dame High School
| West Haven | CT | 9th-12th | none | Boys only | 700 | Roman Catholic |
| Notre Dame High School
| East Stroudsburg | PA | 9th-12th | none | Coed | 235 | Roman Catholic |
| Notre Dame High School
| Easton | PA | 9th-12th | none | Coed | 580 | Roman Catholic |
| Notre Dame High School
| Elmira | NY | 9th-12th | none | Coed | 270 | Roman Catholic |
| Notre Dame High School
| Burlington | IA | 9th-12th | none | Coed | 410 | Roman Catholic |
| Notre Dame High School
| Crowley | LA | 9th-12th | none | Coed | 530 | Roman Catholic |
| Notre Dame High School
| Lawrence | MA | 9th-12th | none | Coed | 230 | Roman Catholic |
| Notre Dame High School
| St. Louis | MO | 9th-12th | none | Girls only | 406 | Roman Catholic |
| Notre Dame High School
| Lawrenceville | NJ | 9th-12th | none | Coed | 1289 | Roman Catholic |
| Notre Dame High School
| Riverside | CA | 9th-12th | none | Coed | 595 | Roman Catholic |
| Notre Dame High School
| Salinas | CA | 9th-12th | none | Girls only | 260 | Roman Catholic |
| Notre Dame High School
| San Jose | CA | 9th-12th | none | Girls only | 620 | Roman Catholic |
| Notre Dame High School
| Sherman Oaks | CA | 9th-12th | none | Coed | 1209 | Roman Catholic |
| Notre Dame High School
| Chattanooga | TN | 9th-12th | none | Coed | 570 | Roman Catholic |
| Notre Dame Preparatory High School
| Scottsdale | AZ | 9th-12th | none | Coed | 890 | Roman Catholic |
| Notre Dame Preparatory School
| Towson | MD | 6th-12th | none | Girls only | 760 | Roman Catholic |
| Notre Dame Preparatory School
| Poniac | MI | 9th-12th | none | Coed | 731 | Roman Catholic |
| Notre Dame Regional High School
| Cape Girardeau | MO | 9th-12th | none | Coed | 490 | Roman Catholic |
| Notre Dame-Cathedral Latin School
| Chardon | OH | 9th-12th | none | Coed | 747 | Roman Catholic |
| Oak Grove Lutheran School
| Fargo | ND | 6th-12th | 9th-12th | Coed | 490 | Lutheran |
| Oak Hall School
| Gainesville | FL | PK-12th | none | Coed | 760 | None |
| Oak Knoll School of the Holy Child
| Summit | NJ | K-12th | none | Girls only | 550 | Roman Catholic |
| Oak Ridge Military Academy
| Oak Ridge | NC | 7th-12th | 7th-12th | Coed | 110 | None |
| Oakland Catholic High School
| Pittsburgh | PA | 9th-12th | none | Girls only | 601 | Roman Catholic |
| Oakridge School
| Arlington | TX | PK-12th | none | Coed | 865 | None |
| Oakwood School
| North Hollywood | CA | K-12th | none | Coed | 756 | None |
| Ojai Valley School
| Ojai | CA | PK-12th | 9th-12th | Coed | 370 | None |
| Oldfields School
| Glencoe | MD | 8th-PG | 8th-PG | Coed | 164 | None |
| Oneida Baptist Institute
| Oneida | KY | 6th-12th | 6th-12th | Coed | 325 | Southern Baptist |
| Oregon Episcopal School
4.4/5
based on 1 student review(s) | Portland | OR | PK-12th | 9th-12th | Coed | 750 | Episcopal |
| Orme School
| Mayer | AZ | 7th-PG | 7th-PG | Coed | 165 | None |
| Our Lady of Good Counsel High School
| Olney | MD | 9th-12th | none | Coed | 1283 | Roman Catholic |
| Our Lady of Lourdes Regional High School
| Coal Township | PA | 9th-12th | none | Coed | 194 | Roman Catholic |
| Our Lady of the Sacred Heart High School
| Coraopolis | PA | 9th-12th | none | Coed | 360 | Roman Catholic |
| Out-of-Door Academy
| Sarasota | FL | PK-12th | none | Coed | 599 | None |
| Overlake School
| Redmond | WA | 5th-12th | none | Coed | 498 | None |
| Pace Academy
| Atlanta | GA | K-12th | none | Coed | 997 | None |
| Packer Collegiate Institute
| Brooklyn | NY | PK-12th | none | Coed | 940 | None |
| Paideia School
| Atlanta | GA | PK-12th | none | Coed | 920 | None |
| Palmer Trinity School
| Miami | FL | 6th-12th | none | Coed | 600 | Episcopal |
| Parish Episcopal School
| Dallas | TX | PK-12th | none | Coed | 1158 | Episcopal |
| Park School
| Baltimore | MD | PK-12th | none | Coed | 865 | None |
| Park School
| Snyder | NY | PK-12th | none | Coed | 250 | None |
| Park Tudor School
| Indianapolis | IN | PK-12th | none | Coed | 984 | None |
| Peddie School
4.6/5
based on 9 student review(s) | Highstown | NJ | 9th-PG | 9th-PG | Coed | 515 | None |
| Pembroke Hill School
| Kansas City | MO | PK-12th | none | Coed | 1193 | None |
| Peoria Notre Dame High School
| Peoria | IL | 9th-12th | none | Coed | 815 | Roman Catholic |
| Phillips Academy Andover
4.7/5
based on 26 student review(s) | Andover | MA | 9th-PG | 9th-PG | Coed | 1109 | None |
| Phillips Exeter Academy
4.7/5
based on 26 student review(s) | Exeter | NH | 9th-PG | 9th-PG | Coed | 1063 | None |
| Phoenix Christian Unified Schools
| Pheonix | AZ | PK-12th | none | Coed | 717 | None |
| Pilgrim School
| Los Angeles | CA | PK-12th | none | Coed | 370 | Congregational |
| Pine Crest School
4.5/5
based on 2 student review(s) | Fort Lauderdale | FL | PK-12th | none | Coed | 1698 | None |
| Pine Forge Academy
| Pine Forge | PA | 9th-12th | none | Coed | 154 | Adventists |
| Pine School
| Stuart | FL | PK-12th | none | Coed | 486 | None |
| Pinewood Preparatory School
| Summerville | SC | PK-12th | none | Coed | 802 | None |
| Pingree School
| South Hamilton | MA | 9th-12th | none | Coed | 330 | None |
| Pingry School
3.8/5
based on 1 student review(s) | Basking Ridge | NJ | K-12th | none | Coed | 1020 | None |
| Pius X High School
| Bangor | PA | 7th-12th | none | Coed | 251 | Roman Catholic |
| Plumstead Christian School
| Plumsteadville | PA | K-12th | none | Coed | 391 | Non-Denominational Christian |
| Poly Prep Country Day School
| Brooklyn | NY | PK-12th | none | Coed | 1080 | None |
| Polytechnic School
3/5
based on 1 student review(s) | Pasadena | CA | K-12th | none | Coed | 860 | None |
| Pomfret School
| Pomfret | CT | 9th-PG | 9th-PG | Coed | 350 | Episcopal |
| Pope John XXIII High School
| Everett | MA | 9th-12th | none | Coed | 377 | Roman Catholic |
| Porter-Gaud School
| Charleston | AL | K-12th | none | Coed | 921 | Episcopal |
| Portersville Christian School
| Portersville | PA | PK-12th | none | Coed | 271 | Evangelical |
| Portland Lutheran School
| Portland | OR | PK-12th | 8th-12th | Coed | 277 | Lutheran |
| Portledge School
| Locust Valley | NY | None-12th | none | Coed | 460 | None |
| Portsmouth Abbey School
| Portsmouth | RI | 9th-12th | 9th-12th | Coed | 360 | Roman Catholic |
| Portsmouth Christian Academy
| Dover | NH | PK-12th | none | Coed | 624 | None |
| Potomac School
4.8/5
based on 1 student review(s) | McLean | VA | K-12th | none | Coed | 900 | None |
| Prairie School
2/5
based on 1 student review(s) | Racine | WI | PK-12th | none | Coed | 718 | None |
| Presentation High School
| San Jose | CA | 9th-12th | none | Girls only | 800 | Roman Catholic |
| Presentation of Mary Academy
| Methuen | MA | 9th-12th | none | Coed | 177 | Roman Catholic |
| Princeton Day School
4/5
based on 2 student review(s) | Princeton | NJ | PK-12th | none | Coed | 900 | Non-Denominational Christian |
| Proctor Academy
| Andover | NH | 9th-12th | 9th-12th | Coed | 353 | None |
| Professional Children's School
| New York | NY | 6th-12th | none | Coed | 205 | None |
| Prout School
| Wakefield | RI | 9th-12th | none | Coed | 610 | Roman Catholic |
| Providence Day School
| Charlotte | NC | PK-12th | none | Coed | 1512 | None |
| Providence High School
| Burbank | CA | 9th-12th | none | Coed | 560 | Roman Catholic |
| Pulaski Academy
| Little Rock | AR | PK-12th | none | Coed | 1270 | None |
| Punahou School
| Honolulu | HI | K-12th | none | Coed | 3761 | None |
| Putney School
| Putney | VT | 9th-12th | 9th-12th | Coed | 226 | None |
| Queen of Peace High School
| Burbank | IL | 9th-12th | none | Girls only | 800 | Roman Catholic |
| Quigley Catholic High School
| Baden | PA | 9th-12th | none | Coed | 183 | Roman Catholic |
| Quincy Notre Dame High School
| Quincy | IL | 9th-12th | none | Coed | 500 | Roman Catholic |
| Rabun Gap-Nacoochee School
| Rabun Gap | GA | 6th-12th | 7th-12th | Coed | 354 | Presbyterian |
| Randolph School
| Huntsville | AL | K-12th | none | Coed | 804 | None |
| Randolph-Macon Academy
4.6/5
based on 1 student review(s) | Front Royal | VA | 6th-PG | 6th-PG | Coed | 433 | Methodist |
| Ranney School
| Tinton Falls | NJ | PK-12th | none | Coed | 815 | None |
| Ransom Everglades School
4.9/5
based on 6 student review(s) | Miami | FL | 6th-12th | none | Coed | 1020 | None |
| Ravenscroft School
| Raleigh | NC | PK-12th | none | Coed | 1229 | None |
| Reading Central Catholic High School
| Reading | PA | 9th-12th | none | Coed | 330 | Roman Catholic |
| Regents School of Austin
| Austin | TX | K-12th | none | Coed | 600 | None |
| Regis High School
4.5/5
based on 4 student review(s) | New York | NY | 9th-12th | none | Boys only | 535 | Roman Catholic (Jesuit) |
| Regis Jesuit High School
| Aurora | CO | 9th-12th | none | Coed | 1460 | Roman Catholic (Jesuit) |
| Rehoboth Christian High School
| Rehoboth | NM | K-12th | none | Coed | 414 | Non-Denominational Christian |
| Riverdale Baptist School
| Upper Marlboro | MD | PK-12th | none | Coed | 758 | Baptist |
| Riverdale Country School
| Riverdale | NY | PK-12th | none | Coed | 1060 | None |
| Rivers School
| Weston | MA | 6th-12th | none | Coed | 469 | None |
| Riverside Military Academy
| Gainsville | GA | 7th-12th | 7th-12th | Boys only | 400 | None |
| Robert Louis Stevenson School
3.7/5
based on 2 student review(s) | Pebble Beach | CA | K-12th | 9th-12th | Coed | 750 | None |
| Rockhurst High School
| Kansas City | MO | 9th-12th | none | Boys only | 1055 | Roman Catholic |
| Rocky Hill School
| East Greenwich | RI | PK-12th | none | Coed | 352 | None |
| Rocky Mount Academy
| Rocky Mount | NC | PK-12th | none | Coed | 450 | None |
| Roeper School
| Bloomfield Hills | MI | PK-12th | none | Coed | 621 | None |
| Roland Park Country School
| Baltimore | MD | K-12th | none | Girls only | 705 | None |
| Rolling Hills Preparatory School
| San Pedro | CA | 6th-12th | none | Coed | 230 | None |
| Roman Catholic High School
| Philadelphia | PA | 9th-12th | none | Boys only | 966 | Roman Catholic |
| Rosary High School
| Fullerton | CA | 9th-12th | none | Girls only | 700 | Roman Catholic |
| Rosati-Kain High School
| St. Louis | MO | 9th-12th | none | Girls only | 410 | Roman Catholic |
| Rowland Hall-St. Mark's School
4.2/5
based on 1 student review(s) | Salt Lake City | UT | PK-12th | none | Coed | 985 | Episcopal |
| Roxbury Latin School
4.5/5
based on 2 student review(s) | West Roxbury | MA | 7th-12th | none | Boys only | 297 | None |
| Rudolf Steiner School
| New York | NY | PK-12th | none | Coed | 336 | None |
| Rye Country Day School
5/5
based on 1 student review(s) | Rye | NY | PK-12th | none | Coed | 860 | None |
| Sacramento Country Day School
| Sacramento | CA | PK-12th | none | Coed | 523 | None |
| Sacred Heart Academy
| Hamden | CT | 9th-12th | none | Girls only | 495 | Roman Catholic |
| Sacred Heart High School
| Los Angeles | CA | 9th-12th | none | Girls only | 370 | Roman Catholic |
| Sacred Heart High School
| Kingston | MA | 7th-12th | none | Coed | 583 | Roman Catholic |
| Sacred Hearts Academy
| Honolulu | HI | PK-12th | none | Girls only | 1150 | Roman Catholic |
| Saddle River Day School
| Saddle River | NJ | K-12th | none | Coed | 317 | None |
| Saint Agnes Boys High School
| New York | NY | 9th-12th | none | Boys only | 300 | Roman Catholic |
| Saint Ann's School
| Brooklyn | NY | PK-12th | none | Coed | 1083 | None |
| Saint Basil Academy
| Jenkintown | PA | 9th-12th | none | Girls only | 382 | Other |
| Saint Francis School
| Honolulu | HI | K-12th | none | Girls only | 421 | Roman Catholic |
| Saint John's Catholic Prep
| Frederick | MD | 9th-12th | none | Coed | 276 | Roman Catholic |
| Saint John's Preparatory School
| Collegeville | MN | 7th-PG | 9th-PG | Coed | 337 | Roman Catholic |
| Saint Louis Priory School
| St. Louis | MO | 7th-12th | none | Boys only | 390 | Roman Catholic |
| Saint Mary's Catholic High School
| Pheonix | AZ | 9th-12th | none | Coed | 847 | Roman Catholic |
| Saint Mary's Hall
4/5
based on 1 student review(s) | San Antonio | TX | PK-12th | none | Coed | 970 | Non-Denominational Christian |
| Saints John Neumann and Maria Goretti Catholic High School
| Philadelphia | PA | 9th-12th | none | Coed | 1091 | Roman Catholic |
| Saints Peter and Paul High School
| Easton | MD | 9th-12th | none | Coed | 189 | Roman Catholic |
| Salem Academy
| Winston-Salem | NC | 9th-12th | 9th-12th | Girls only | 161 | None |
| Salesianum School
| Wilmington | DE | 9th-12th | none | Boys only | 1042 | Roman Catholic |
| Salisbury School
| Salisbury | CT | 9th-PG | 9th-PG | Boys only | 295 | Episcopal |
| Salpointe Catholic High School
| Tucson | AZ | 9th-12th | none | Coed | 433 | Roman Catholic |
| San Francisco University High School
4.3/5
based on 3 student review(s) | San Francisco | CA | 9th-12th | none | Coed | 385 | None |
| Sandia Preparatory School
| Albuquerque | NM | 6th-12th | none | Coed | 670 | None |
| Sandy Spring Friends School
| Sandy Spring | MD | PK-12th | 9th-12th | Coed | 561 | Quakers/Friends |
| Sanford School
| Hockessin | DE | PK-12th | none | Coed | 675 | None |
| Santa Catalina School
5/5
based on 1 student review(s) | Monterey | CA | PK-12th | 9th-12th | Girls only | 548 | Roman Catholic |
| Santa Fe Preparatory School
| Santa Fe | NM | 7th-12th | none | Coed | 344 | None |
| Savannah Country Day School
| Savannah | GA | PK-12th | none | Coed | 1007 | None |
| Sayre School
| Lexington | KY | PK-12th | none | Coed | 563 | Non-Denominational Christian |
| School at Church Farm
| Exton | PA | 7th-12th | 7th-12th | Boys only | 200 | Episcopal |
| School of the Holy Child
| Rye | NY | 5th-12th | none | Girls only | 330 | Roman Catholic |
| Schools of the Sacred Heart
| San Francisco | CA | K-12th | none | Coed | 1073 | Roman Catholic |
| Scranton Preparatory School
| Scranton | PA | 9th-12th | none | Coed | 862 | Roman Catholic (Jesuit) |
| Seattle Preparatory School
| Seattle | WA | 9th-12th | none | Coed | 675 | Roman Catholic |
| Serra Catholic High School
| McKeesport | PA | 9th-12th | none | Coed | 354 | Roman Catholic |
| Servite High School
| Anaheim | CA | 9th-12th | none | Boys only | 877 | Roman Catholic |
| Seton Catholic Central School
| Plattsburgh | NY | 7th-12th | none | Coed | 350 | Roman Catholic |
| Seton-La Salle Catholic High School
| Mt. Lebanon | PA | 9th-12th | none | Coed | 511 | Roman Catholic |
| Seven Hills School
| Cincinnati | OH | PK-12th | none | Coed | 1070 | None |
| Severn School
| Severna Park | MD | 6th-12th | none | Coed | 591 | None |
| Sewickley Academy
4.6/5
based on 1 student review(s) | Sewickley | PA | PK-12th | none | Coed | 800 | None |
| Shady Side Academy
| Pittsburgh | PA | PK-12th | 9th-12th | Coed | 925 | None |
| Shipley School
| Bryn Mawr | PA | PK-12th | none | Coed | 835 | None |
| Shorecrest Preparatory School
| St. Petersburg | FL | PK-12th | none | Coed | 1000 | None |
| Shrine Catholic School
| Royal Oak | MI | 9th-12th | none | Coed | 286 | Roman Catholic |
| Sidwell Friends School
4.2/5
based on 2 student review(s) | Washington | DC | PK-12th | none | Coed | 1100 | Quakers/Friends |
| Sierra Canyon School
| Chatsworth | CA | PK-12th | none | Coed | 850 | None |
| Sioux Falls Christian School
| Sioux Falls | SD | PK-12th | none | Coed | 804 | Non-Denominational Christian |
| Solomon Schechter School of Westchester
| Hartsdale | NY | K-12th | none | Coed | 965 | Jewish |
| Sonoma Academy
| Santa Rosa | CA | 9th-12th | none | Coed | 200 | None |
| Southampton Academy
| Courtland | VA | PK-12th | none | Coed | 407 | None |
| Southfield School
| Brookline | MA | PK-12th | none | Girls only | 395 | None |
| Southwest Chicago Christian Schools
| Palos Heights | IL | 9th-12th | none | Coed | 410 | Non-Denominational Christian |
| Southwestern Academy
| San Marino | CA | 6th-PG | 6th-PG | Coed | 115 | None |
| Spence School
5/5
based on 1 student review(s) | New York | NY | K-12th | none | Girls only | 658 | None |
| Spencerville Adventist Academy
| Silver Spring | MD | PK-12th | none | Coed | 283 | Adventists |
| Springside School
4.2/5
based on 2 student review(s) | Philadelphia | PA | PK-12th | none | Girls only | 670 | None |
| St. Agnes Academic High School
| College Point | NY | 9th-12th | none | Girls only | 416 | Roman Catholic |
| St. Agnes Academy
| Houston | TX | 9th-12th | none | Girls only | 840 | Roman Catholic |
| St. Albans School
4.6/5
based on 1 student review(s) | Washington | DC | 4th-12th | 9th-12th | Boys only | 575 | Episcopal |
| St. Andrew's Episcopal
| Ridgeladn | MS | PK-12th | none | Coed | 1206 | Episcopal |
| St. Andrew's Episcopal School
| Potomac | MD | PK-12th | none | Coed | 528 | Episcopal |
| St. Andrew's Priory School
| Honolulu | HI | K-12th | none | Girls only | 535 | Episcopal |
| St. Andrew's School
| Boca Raton | FL | K-12th | 9th-12th | Coed | 1155 | Episcopal |
| St. Anne Pacelli Catholic School
| Columbus | GA | 9th-12th | none | Coed | 200 | Roman Catholic |
| St. Anne's-Belfield School
| Charlottesville | VA | PK-12th | 9th-12th | Coed | 853 | None |
| St. Anthony's High School
| South Huntington | NY | 9th-12th | none | Coed | 2250 | Roman Catholic |
| St. Augustine High School
| San Diego | CA | 9th-12th | none | Boys only | 699 | Roman Catholic |
| St. Bernard's Central High School
| Fitchburg | MA | 9th-12th | none | Coed | 371 | Roman Catholic |
| St. Catherine's School
| Richmond | VA | PK-12th | none | Girls only | 833 | Episcopal |
| St. Cecilia Academy
| Nashville | TN | 9th-12th | none | Girls only | 227 | Roman Catholic |
| St. Christopher's School
| Richmond | VA | PK-12th | none | Boys only | 961 | Episcopal |
| St. Clement Parish School
| Medford | MA | PK-12th | none | Coed | 280 | Roman Catholic |
| St. David's School
3.2/5
based on 1 student review(s) | Raleigh | NC | K-12th | none | Coed | 479 | Episcopal |
| St. Dominic Academy
| Jersey City | NJ | 9th-12th | none | Girls only | 485 | Roman Catholic |
| St. Dominic Academy
| Auburn | ME | 9th-12th | none | Coed | 276 | Roman Catholic |
| St. Edward's School
| Vero Beach | FL | PK-12th | none | Coed | 877 | Episcopal |
| St. Frances Academy
| Baltimore | MD | 9th-12th | none | Coed | 303 | Roman Catholic |
| St. Francis De Sales High School
| Toledo | OH | 9th-12th | none | Boys only | 596 | Roman Catholic |
| St. Francis High School
| Wheaton | IL | 9th-12th | none | Coed | 756 | Roman Catholic |
| St. Francis High School
| Louisville | KY | 9th-12th | none | Coed | 130 | None |
| St. Francis Preparatory School
| Fresh Meadows | NY | 9th-12th | none | Coed | 2750 | Roman Catholic |
| St. Francis Schools
| Roswell | GA | PK-12th | none | Coed | 850 | None |
| St. George's School
3.9/5
based on 3 student review(s) | Middletown | RI | 9th-12th | 9th-12th | Coed | 365 | Episcopal |
| St. George's School
| Germantown | TN | PK-12th | none | Coed | 1199 | None |
| St. George's School
| Spokane | WA | K-12th | none | Coed | 399 | None |
| St. Gregory College Preparatory School
| Tucson | AZ | 6th-12th | none | Coed | 1196 | None |
| St. Hubert Catholic High School for Girls
| Philadelphia | PA | 9th-12th | none | Girls only | 792 | Roman Catholic |
| St. Ignatius College Prep
3.6/5
based on 1 student review(s) | Chicago | IL | 9th-12th | none | Coed | 1321 | Roman Catholic |
| St. Ignatius College Preparatory School
4.2/5
based on 1 student review(s) | San Francisco | CA | 9th-12th | none | Coed | 1427 | Roman Catholic (Jesuit) |
| St. James School
| Montgomery | AL | PK-12th | none | Coed | 1112 | None |
| St. James School
| St. James | MD | 8th-12th | 8th-12th | Coed | 215 | Episcopal |
| St. John Vianney High School
| St. Louis | MO | 9th-12th | none | Boys only | 585 | Roman Catholic |
| St. John's High School
| Shrewsbury | MA | 9th-12th | none | Boys only | 1058 | Roman Catholic |
| St. John's School
| Delphos | OH | 9th-12th | none | Coed | 285 | Roman Catholic |
| St. John's Northwest Military Academy
| Delafield | WI | 7th-12th | 7th-12th | Boys only | 341 | None |
| St. John's Preparatory School
5/5
based on 1 student review(s) | Danvers | MA | 9th-12th | none | Boys only | 1200 | Roman Catholic |
| St. John's School
| Houston | TX | K-12th | none | Coed | 1211 | None |
| St. Johns Country Day School
3.6/5
based on 1 student review(s) | Orange Park | FL | PK-12th | none | Coed | 754 | None |
| St. Joseph Central High School
| Pittsfield | MA | 9th-12th | none | Coed | 231 | Roman Catholic |
| St. Joseph High School
| Metuchen | NJ | 9th-12th | none | Boys only | 823 | Roman Catholic |
| St. Joseph's Academy
| St. Louis | MO | 9th-12th | none | Girls only | 642 | Roman Catholic |
| St. Joseph's Collegiate Institute
| Buffalo | NY | 9th-12th | none | Boys only | 780 | Roman Catholic |
| St. Joseph's Preparatory School
4.6/5
based on 2 student review(s) | Philadelphia | PA | 9th-12th | none | Boys only | 980 | Roman Catholic |
| St. Lucy's Priory High School
| Glendora | CA | 9th-12th | none | Girls only | 865 | Roman Catholic |
| St. Luke's School
| New Canaan | CT | 5th-12th | none | Coed | 504 | None |
| St. Margaret's Episcopal School
| San Juan Capistrano | CA | PK-12th | none | Coed | 1220 | Episcopal |
| St. Maria Goretti High School
| Hagerstown | MD | 9th-12th | none | Coed | 220 | Roman Catholic |
| St. Mark's School
4.8/5
based on 1 student review(s) | Southborough | MA | 9th-12th | 9th-12th | Coed | 335 | Episcopal |
| St. Mark's School of Texas
4.7/5
based on 2 student review(s) | Dallas | TX | 1st-12th | none | Boys only | 820 | None |
| St. Martin's Episcopal School
| Metarie | LA | PK-12th | none | Coed | 677 | Episcopal |
| St. Mary Catholic High School
| Monroe | MI | 9th-12th | none | Coed | 440 | Roman Catholic |
| St. Mary High School
| Westfield | MA | 9th-12th | none | Coed | 140 | Roman Catholic |
| St. Mary's Academy
| Portland | OR | 9th-12th | none | Girls only | 615 | Roman Catholic |
| St. Mary's Dominican High School
| New Orleans | LA | 8th-12th | none | Girls only | 1068 | Roman Catholic |
| St. Mary's Episcopal School
| Memphis | TN | PK-12th | none | Girls only | 860 | Episcopal |
| St. Mary's High School
| Colorado Springs | CO | 9th-12th | none | Coed | 983 | Roman Catholic |
| St. Mary's High School
| Lynn | MA | 7th-12th | none | Coed | 667 | Roman Catholic |
| St. Mary's High School
| Annapolis | MD | 9th-12th | none | Coed | 478 | Roman Catholic |
| St. Mary's Preparatory School
| Orchard Lake | MI | 9th-12th | 9th-12th | Boys only | 540 | Roman Catholic |
| St. Mary's Ryken High School
| Leonardtown | MD | 9th-12th | none | Coed | 664 | Roman Catholic |
| St. Mary's School
| Raleigh | NC | 9th-12th | 9th-12th | Girls only | 282 | Episcopal |
| St. Patrick High School
| Chicago | IL | 9th-12th | none | Boys only | 961 | Roman Catholic |
| St. Paul Academy and Summit School
| St. Paul | MN | K-12th | none | Coed | 866 | None |
| St. Paul Catholic High School
| Briston | CT | 9th-12th | none | Coed | 300 | Roman Catholic |
| St. Paul's School
| Brooklandville | MD | K-12th | none | Boys only | 853 | Episcopal |
| St. Paul's School for Girls
| Brooklandville | MD | 5th-12th | none | Girls only | 463 | Episcopal |
| Saint Peter's Preparatory School
| Jersey City | NJ | 9th-12th | none | Boys only | 915 | Roman Catholic (Jesuit) |
| St. Peter-Marian Catholic High School
| Worcester | MA | 7th-12th | none | Coed | 711 | Roman Catholic |
| St. Pius X Catholic High School
| Atlanta | GA | 9th-12th | none | Coed | 1050 | Roman Catholic |
| St. Pius X High School
| Albuquerque | NM | 9th-12th | none | Coed | 991 | Roman Catholic |
| St. Pius X High School
| Houston | TX | 9th-12th | none | Coed | 626 | Roman Catholic |
| St. Raphael Academy
| Pawtucket | RI | 9th-12th | none | Coed | 450 | Roman Catholic |
| St. Scholastica Academy
| Chicago | IL | 9th-12th | none | Girls only | 290 | Roman Catholic |
| St. Sebastian's School
| Needham | MA | 7th-12th | none | Boys only | 350 | Roman Catholic |
| St. Stephen's and St. Agnes School
4.6/5
based on 1 student review(s) | Alexandria | VA | PK-12th | none | Coed | 1150 | Episcopal |
| St. Stephen's Episcopal School
| Bradenton | FL | PK-12th | none | Coed | 753 | Episcopal |
| St. Stephen's Episcopal School
| Austin | TX | 6th-12th | 8th-12th | Coed | 656 | Episcopal |
| St. Thomas Aquinas High School
| Dover | NH | 9th-12th | none | Coed | 721 | Roman Catholic |
| St. Thomas High School
| Houston | TX | 9th-12th | none | Boys only | 682 | Roman Catholic |
| St. Thomas More High School
| Rapid City | SD | 9th-12th | none | Coed | 234 | Roman Catholic |
| St. Viator High School
| Arlington Heights | IL | 9th-12th | none | Coed | 1090 | Roman Catholic |
| St. Vincent Ferrer High School
| New York | NY | 9th-12th | none | Girls only | 500 | Roman Catholic |
| St. Vincent's Academy
| Savannah | GA | 9th-12th | none | Girls only | 350 | Roman Catholic |
| St. Xavier High School
| Louisville | KY | 9th-12th | none | Boys only | 1431 | Roman Catholic |
| Staten Island Academy
| Staten Island | NY | PK-12th | none | Coed | 400 | None |
| Stephen T. Badin High School
| Hamilton | OH | 9th-12th | none | Coed | 552 | Roman Catholic |
| Steward School
| Richmond | VA | K-12th | none | Coed | 600 | None |
| Stoneleigh-Burnham School
| Greenfield | MA | 7th-PG | 7th-PG | Girls only | 125 | None |
| Stony Brook School
| Stony Brook | NY | 7th-12th | 7th-12th | Coed | 346 | Non-Denominational Christian |
| Strake Jesuit College Preparatory
| Houston | TX | 9th-12th | none | Boys only | 868 | Roman Catholic (Jesuit) |
| Stratford Academy
| Macon | GA | PK-12th | none | Coed | 925 | None |
| Stuart Country Day
| Princeton | NJ | PK-12th | none | Girls only | 552 | Roman Catholic |
| Summit Country Day School
| Cincinnati | OH | PK-12th | none | Coed | 1060 | Roman Catholic |
| Tabor Academy
4.3/5
based on 3 student review(s) | Marion | MA | 9th-12th | 9th-12th | Coed | 505 | None |
| Taft School
4.3/5
based on 3 student review(s) | Watertown | CT | 9th-PG | 9th-PG | Coed | 580 | None |
| Takoma Academy
| Takoma Park | MD | 9th-12th | none | Coed | 228 | Adventists |
| Tampa Preparatory School
4.8/5
based on 2 student review(s) | Tampa | FL | 6th-12th | none | Coed | 660 | None |
| Tandem Friends School
| Charlottesville | VA | 5th-12th | none | Coed | 240 | None |
| Tatnall School
| Wilmington | DE | PK-12th | none | Coed | 706 | None |
| Tattnall Square Academy
| Macon | GA | PK-12th | none | Coed | 700 | Non-Denominational Christian |
| Thacher School
4.8/5
based on 5 student review(s) | Ojai | CA | 9th-12th | 9th-12th | Coed | 240 | None |
| Thayer Academy
| Braintree | MA | 6th-12th | none | Coed | 693 | None |
| Thetford Academy
| Thetford | VT | 7th-12th | none | Coed | 354 | None |
| Thomas More Prep-Marian High School
| Hays | KS | 9th-12th | 9th-12th | Coed | 212 | Roman Catholic |
| Thornton Academy
| Saco | ME | 6th-12th | 6th-12th | Coed | 1470 | None |
| Tome School
| North East | MD | K-12th | none | Coed | 470 | None |
| Tower Hill School
3.7/5
based on 2 student review(s) | Wilmington | DE | PK-12th | none | Coed | 740 | None |
| Trevor Day School
| New York | NY | PK-12th | none | Coed | 790 | None |
| Trinity Catholic High School
| Stamford | CT | 9th-12th | none | Coed | 405 | Roman Catholic |
| Trinity High School
| River Forest | IL | 9th-12th | none | Girls only | 484 | Roman Catholic |
| Trinity High School
| Manchester | NH | 9th-12th | none | Coed | 409 | Roman Catholic |
| Trinity High School
| Camp Hill | PA | 9th-12th | none | Coed | 690 | Roman Catholic |
| Trinity Preparatory School
| Winter Park | FL | 6th-12th | none | Coed | 832 | Episcopal |
| Trinity School
4.5/5
based on 4 student review(s) | New York | NY | K-12th | none | Coed | 960 | Episcopal |
| Trinity Valley School
4/5
based on 1 student review(s) | Fort Worth | TX | K-12th | none | Coed | 960 | None |
| Trinity-Pawling School
| Pawling | NY | 7th-PG | 9th-PG | Boys only | 320 | Episcopal |
| Tuscaloosa Academy
| Tuscaloosa | AL | PK-12th | none | Coed | 425 | None |
| Tuscarawas Central Catholic High School
| New Philadelphia | OH | 9th-12th | none | Coed | 147 | Roman Catholic |
| United Nations International School
5/5
based on 1 student review(s) | New York | NY | K-12th | none | Coed | 1550 | None |
| University High School of Indiana
| Carmel | IN | 9th-12th | none | Coed | 175 | None |
| University Liggett School
| Grosse Pointe Woods | MI | PK-12th | none | Coed | 606 | None |
| University of Chicago Laboratory Schools
4.6/5
based on 1 student review(s) | Chicago | IL | PK-12th | none | Coed | 1700 | None |
| University Prep
| Seattle | WA | 6th-12th | none | Coed | 477 | None |
| University School of Jackson
| Jackson | TN | PK-12th | none | Coed | 1290 | None |
| University School of Milwaukee
| Milwaukee | WI | PK-12th | none | Coed | 1062 | None |
| University School of Nova Southeastern University
| Fort Lauderdale | FL | PK-12th | none | Coed | 1804 | None |
| University School
| Hunting Valley | OH | K-12th | none | Boys only | 870 | None |
| Upattinas School
| Glenmoore | PA | K-12th | none | Coed | 112 | None |
| Urban School of San Francisco
| San Francisco | CA | 9th-12th | none | Coed | 342 | None |
| Ursuline Academy
| Wilmington | DE | PK-12th | none | Girls only | 705 | Roman Catholic |
| Ursuline Academy
| Dedham | MA | 7th-12th | none | Girls only | 395 | Roman Catholic |
| Vail Mountain School
| Vail | CO | K-12th | none | Coed | 362 | None |
| Valley Catholic School
| Beaverton | OR | PK-12th | none | Coed | 500 | Roman Catholic |
| Valley Forge Military Academy and College
4.2/5
based on 1 student review(s) | Wayne | PA | 7th-12th | 7th-PG | Boys only | 524 | None |
| Viewpoint School
| Calabasas | CA | K-12th | none | Coed | 1215 | None |
| Villa Joseph Marie High School
| Holland | PA | 9th-12th | none | Girls only | 365 | Roman Catholic |
| Villa Madonna Academy
| Villa Hills | KY | K-12th | none | Coed | 519 | Roman Catholic |
| Villa Maria Academy
| Erie | PA | 9th-12th | none | Girls only | 298 | Roman Catholic |
| Villa Maria Academy
| Malvern | PA | 9th-12th | none | Girls only | 442 | Roman Catholic |
| Villa Walsh Academy
| Morristown | NJ | 7th-12th | none | Coed | 250 | Roman Catholic |
| Villanova Preparatory School
| Ojai | CA | 9th-12th | 9th-12th | Coed | 315 | Roman Catholic |
| Virginia Episcopal School
4.4/5
based on 1 student review(s) | Lynchburg | VA | 9th-12th | 9th-12th | Coed | 268 | Episcopal |
| Visitation Academy
| St. Louis | MO | PK-12th | none | Girls only | 621 | Roman Catholic |
| Waldorf School of Garden City
4.6/5
based on 1 student review(s) | Garden City | NY | PK-12th | none | Coed | 368 | None |
| Walker School
| Marietta | GA | PK-12th | none | Coed | 1072 | None |
| Walsh Jesuit High School
| Cuyahoga Falls | OH | 9th-12th | none | Coed | 950 | Roman Catholic (Jesuit) |
| Walsingham Academy
| Williamsburg | VA | PK-12th | none | Coed | 755 | Roman Catholic |
| Wardlaw-Hartridge School
| Edison | NJ | PK-12th | none | Coed | 446 | None |
| Waring School
| Beverly | MA | 6th-12th | none | Coed | 150 | None |
| Washington Academy
| East Machias | ME | 9th-12th | 9th-12th | Coed | 344 | None |
| Washington International School
| Washington | DC | PK-12th | none | Coed | 890 | None |
| Waterford School
| Sandy | UT | PK-12th | none | Coed | 1022 | None |
| Wayland Academy
| Beaver Dam | WI | 9th-12th | 9th-12th | Coed | 237 | None |
| Waynflete School
| Portland | ME | PK-12th | none | Coed | 566 | None |
| Webb School of Knoxville
| Knoxville | TN | K-12th | none | Coed | 1047 | None |
| Webb School
| Bell Buckle | TN | 6th-12th | 7th-12th | Coed | 300 | None |
| Webb Schools
4.7/5
based on 5 student review(s) | Claremont | CA | 9th-12th | 9th-12th | Coed | 375 | None |
| Wentworth Military Academy
| Lexington | MO | 9th-PG | 9th-PG | Coed | 215 | None |
| Wesleyan School
| Norcross | GA | K-12th | none | Coed | 1080 | Non-Denominational Christian |
| West Philadelphia Catholic High School
| Philadelphia | PA | 9th-12th | none | Coed | 450 | Roman Catholic |
| West-Mont Christian Academy
| Pottstown | PA | K-12th | none | Coed | 254 | Non-Denominational Christian |
| Westchester Country Day School
| High Point | NC | K-12th | none | Coed | 432 | None |
| Western Mennonite School
| Salem | OR | 6th-12th | 9th-12th | Coed | 245 | Mennonite |
| Western Reserve Academy of Hudson
| Hudson | OH | 9th-PG | 9th-PG | Coed | 385 | None |
| Westminster Christian Academy
| St. Louis | MO | 7th-12th | none | Coed | 864 | None |
| Westminster School
4.4/5
based on 2 student review(s) | Simsbury | CT | 9th-PG | 9th-PG | Coed | 390 | None |
| Westminster Schools
| Atlanta | GA | K-12th | none | Coed | 1826 | None |
| Westminster Schools of Augusta
| Augusta | GA | PK-12th | none | Coed | 502 | Non-Denominational Christian |
| Westover School
| Middlebury | CT | 9th-12th | 9th-12th | Girls only | 193 | None |
| Westridge School
| Pasadena | CA | 4th-12th | none | Girls only | 510 | None |
| Westtown School
| Westtown | PA | PK-10th | 9th-12th | Coed | 800 | Quakers/Friends |
| Whitefield Academy
| Mableton | GA | PK-12th | none | Coed | 684 | Non-Denominational Christian |
| Whitfield School
| St. Louis | MO | 6th-12th | none | Coed | 474 | None |
| Whitinsville Christian School
| Whitinsville | MA | PK-12th | none | Coed | 497 | Non-Denominational Christian |
| Wilbraham and Monson Academy
| Wilbraham | MA | 6th-12th | 9th-12th | Coed | 381 | None |
| Wildwood School
| Los Angeles | CA | K-12th | none | Coed | 825 | None |
| William Penn Charter School
| Philadelphia | PA | K-12th | none | Coed | 886 | Quakers/Friends |
| Williams School
| New London | CT | 7th-12th | none | Coed | 313 | None |
| Williston Northampton School
| Easthampton | MA | 7th-PG | 9th-PG | Coed | 540 | None |
| Willows Academy
| Des Plaines | IL | 6th-12th | none | Girls only | 230 | Roman Catholic |
| Wilmington Friends School
| Wilmington | DE | PK-12th | none | Girls only | 831 | Quakers/Friends |
| Wilson Hall School
| Sumter | SC | PK-12th | none | Coed | 845 | None |
| Winchendon School
| Winchendon | MA | 9th-12th | 9th-12th | Coed | 190 | None |
| Winchester Thurston School
| Pittsburg | PA | PK-12th | none | Coed | 643 | None |
| Windermere Preparatory School
| Windermere | FL | PK-12th | none | Coed | 724 | None |
| Windsor School
| Flushing | NY | 6th-PG | none | Coed | 160 | None |
| Windward School
| Los Angeles | CA | 7th-12th | none | Coed | 474 | None |
| Winsor School
4.4/5
based on 1 student review(s) | Boston | MA | 5th-12th | none | Girls only | 425 | None |
| Woodlynde School
| Strafford | PA | K-12th | none | Coed | 302 | None |
| Woodside Priory School
| Portola Valley | CA | 6th-12th | 9th-12th | Coed | 352 | Roman Catholic |
| Woodstream Christian Academy
| Mitchellville | MD | K-12th | none | Coed | 400 | Non-Denominational Christian |
| Woodward Academy
| College Park | GA | PK-12th | none | Coed | 2860 | None |
| Wooster School
| Danbury | CT | PK-12th | none | Coed | 346 | Episcopal |
| Worcester Academy
| Worcester | MA | 6th-PG | 9th-PG | Coed | 655 | None |
| Worcester Preparatory School
| Berlin | MD | PK-12th | none | Coed | 615 | None |
| Wyoming Seminary College Preparatory School
4.2/5
based on 1 student review(s) | Kingston | PA | PK-12th | 9th-PG | Coed | 780 | Methodist |
| Xaverian Brothers High School
4.4/5
based on 6 student review(s) | Westwood | MA | 7th-12th | none | Boys only | 900 | Roman Catholic |
| Xavier High School
| Middletown | CT | 9th-12th | none | Boys only | 873 | Roman Catholic |
| Xavier High School
| New York | NY | 9th-12th | none | Boys only | 938 | Roman Catholic |
| York Country Day School
| York | PA | PK-12th | none | Coed | 214 | None |
| York School
| Monterey | CA | 8th-12th | none | Coed | 226 | Episcopal |
| Zion Lutheran Church and School
| Deerfield Beach | FL | PK-12th | none | Coed | 718 | Lutheran |