| Awty International School
| Houston | TX | PK-12th | none | Coed | 1135 | None |
| Cistercian Preparatory School
| Irving | TX | 5th-12th | none | Boys only | 343 | Roman Catholic |
| Duchesne Academy of the Sacred Heart
| Houston | TX | PK-12th | none | Girls only | 665 | Roman Catholic |
| 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 |
| 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 |
| Greenhill School
| Addison | TX | PK-12th | none | Coed | 1248 | None |
| Hockaday School 4/5 based on 1 student review(s) | Dallas | TX | PK-12th | 8th-12th | Girls only | 1085 | None |
| Hyde Park Schools
| Austin | TX | K-12th | none | Coed | 762 | Baptist |
| Incarnate Word Academy
| Corpus Christi | TX | PK-12th | none | Coed | 745 | Roman Catholic |
| Jesuit College Preparatory School
| Dallas | TX | 9th-12th | none | Boys only | 1030 | Roman Catholic (Jesuit) |
| John Cooper School
| The Woodlands | TX | PK-12th | none | Coed | 950 | None |
| Kinkaid School 4.6/5 based on 1 student review(s) | Houston | TX | PK-12th | none | Coed | 1280 | None |
| Lakehill Preparatory School
| Dallas | TX | K-12th | none | Coed | 400 | None |
| Nolan Catholic High School
| Fort Worth | TX | 9th-12th | none | Coed | 1089 | Roman Catholic |
| Oakridge School
| Arlington | TX | PK-12th | none | Coed | 865 | None |
| Parish Episcopal School
| Dallas | TX | PK-12th | none | Coed | 1158 | Episcopal |
| Regents School of Austin
| Austin | TX | K-12th | none | Coed | 600 | None |
| Saint Mary's Hall 4/5 based on 1 student review(s) | San Antonio | TX | PK-12th | none | Coed | 970 | Non-Denominational Christian |
| St. Agnes Academy
| Houston | TX | 9th-12th | none | Girls only | 840 | Roman Catholic |
| St. John's School
| Houston | TX | K-12th | none | Coed | 1211 | None |
| 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. Pius X High School
| Houston | TX | 9th-12th | none | Coed | 626 | Roman Catholic |
| St. Stephen's Episcopal School
| Austin | TX | 6th-12th | 8th-12th | Coed | 656 | Episcopal |
| St. Thomas High School
| Houston | TX | 9th-12th | none | Boys only | 682 | Roman Catholic |
| Strake Jesuit College Preparatory
| Houston | TX | 9th-12th | none | Boys only | 868 | Roman Catholic (Jesuit) |
| Trinity Valley School 4/5 based on 1 student review(s) | Fort Worth | TX | K-12th | none | Coed | 960 | None |