| Incarnate Word Academy | 7.1 |
Regular elementary or secondary | 9-12 | 249 | 11.9 | Roman Catholic |
| St Thomas High School | 9.0 |
Regular elementary or secondary | 9-12 | 679 | 14.4 | Roman Catholic |
| American Academy | 9.3 |
Regular elementary or secondary | 9-12 | 8 | 8.0 | Nonsectarian |
| Episcopal High School | 9.6 |
Regular elementary or secondary | 9-12 | 629 | 8.6 | Episcopal |
| Oak Brook Baptist | 12.3 |
Regular elementary or secondary | 9-12 | 47 | 23.5 | Baptist |
| Lutheran High North | 12.6 |
Regular elementary or secondary | 9-12 | 288 | 15.9 | Lutheran Church - Missouri Synod |
| School Of The Good Shepherd | 13.8 |
Regular elementary or secondary | 9-12 | 64 | 21.3 | Christian (no specific denomination) |
| St Pius X High School | 14.0 |
Regular elementary or secondary | 9-12 | 707 | 12.4 | Roman Catholic |
| Strake Jesuit College Prep School | 14.3 |
Regular elementary or secondary | 9-12 | 891 | 15.3 | Roman Catholic |
| St Agnes Academy School | 14.3 |
Regular elementary or secondary | 9-12 | 840 | 13.6 | Roman Catholic |
| Houston Learning Academy | 14.4 |
Regular elementary or secondary | 9-12 | 19 | 6.3 | Nonsectarian |
| The Tenney School | 14.8 |
Alternative/other | 7-12 | 55 | 3.8 | Nonsectarian |
| Alexander-smith Academy | 15.3 |
Regular elementary or secondary | 9-12 | 70 | 4.4 | Nonsectarian |
| Houston Learning Academy | 15.8 |
Regular elementary or secondary | 9-12 | 24 | 8.0 | Nonsectarian |
| Devereux School | 16.3 |
Special education | 7-12 | 91 | 7.0 | Nonsectarian |
| Houston Christian High School | 18.7 |
Regular elementary or secondary | 9-12 | 453 | 9.5 | Christian (no specific denomination) |
| Memorial Private High School | 19.1 |
Alternative/other | 9-12 | 24 | 4.8 | Nonsectarian |
| Houston Learning Academy | 24.1 |
Regular elementary or secondary | 10-12 | 20 | 6.7 | Nonsectarian |
