| Houston Christian High School | 3.7 |
Regular elementary or secondary | 9-12 | 453 | 9.5 | Christian (no specific denomination) |
| Alexander-smith Academy | 4.3 |
Regular elementary or secondary | 9-12 | 70 | 4.4 | Nonsectarian |
| The Tenney School | 4.3 |
Alternative/other | 7-12 | 55 | 3.8 | Nonsectarian |
| St Agnes Academy School | 5.9 |
Regular elementary or secondary | 9-12 | 840 | 13.6 | Roman Catholic |
| Strake Jesuit College Prep School | 5.9 |
Regular elementary or secondary | 9-12 | 891 | 15.3 | Roman Catholic |
| Oak Brook Baptist | 6.7 |
Regular elementary or secondary | 9-12 | 47 | 23.5 | Baptist |
| The Houston Learning Academy - Katy Campus | 9.4 |
Regular elementary or secondary | 9-12 | 19 | 1.4 | Nonsectarian |
| Houston Learning Academy | 9.4 |
Alternative/other | 9-12 | 48 | 5.8 | Nonsectarian |
| Episcopal High School | 9.5 |
Regular elementary or secondary | 9-12 | 629 | 8.6 | Episcopal |
| Houston Learning Academy | 9.8 |
Regular elementary or secondary | 9-12 | 24 | 8.0 | Nonsectarian |
| Pope John Xxiii High School | 10.7 |
Regular elementary or secondary | 9-12 | 206 | 9.4 | Roman Catholic |
| Lutheran High North | 11.1 |
Regular elementary or secondary | 9-12 | 288 | 15.9 | Lutheran Church - Missouri Synod |
| St Thomas High School | 11.5 |
Regular elementary or secondary | 9-12 | 679 | 14.4 | Roman Catholic |
| St Pius X High School | 12.1 |
Regular elementary or secondary | 9-12 | 707 | 12.4 | Roman Catholic |
| Houston Learning Academy - North Campus | 14.4 |
Regular elementary or secondary | 9-12 | 27 | 9.0 | Nonsectarian |
| Incarnate Word Academy | 14.6 |
Regular elementary or secondary | 9-12 | 249 | 11.9 | Roman Catholic |
| Mount Carmel High School | 19.1 |
Regular elementary or secondary | 9-12 | 195 | 9.0 | Roman Catholic |
| Concordia Lutheran High School | 22.5 |
Regular elementary or secondary | 9-12 | 397 | 13.9 | Lutheran Church - Missouri Synod |
| American Academy | 22.9 |
Regular elementary or secondary | 9-12 | 8 | 8.0 | Nonsectarian |
| Langtry Preparatory Academy | 23.7 |
Alternative/other | 9-12 | 6 | 6.0 | Nonsectarian |
| School Of The Good Shepherd | 24.0 |
Regular elementary or secondary | 9-12 | 64 | 21.3 | Christian (no specific denomination) |
