| The Winston School San Antonio | 3.2 |
Special education | 1-12 | 218 | 8.0 | Nonsectarian |
| Atonement Academy | 3.9 |
Regular elementary or secondary | KG-12 | 452 | 9.8 | Roman Catholic |
| Castle Hills First Baptist School | 4.1 |
Regular elementary or secondary | KG-12 | 294 | 8.7 | Baptist |
| Cornerstone Christian Schools | 4.2 |
Regular elementary or secondary | Pre-KG-12 | 512 | 7.3 | Christian (no specific denomination) |
| Scenic Hills Sda Christian School | 4.8 |
Regular elementary or secondary | Pre-KG-9 | 22 | 11.0 | Seventh-Day Adventist |
| Tmi-the Episcopal School Of Texas | 5.1 |
Regular elementary or secondary | 6-12 | 361 | 8.0 | Episcopal |
| Sendero Christian Academy | 5.7 |
Regular elementary or secondary | Pre-KG-12 | 326 | 18.1 | Christian (no specific denomination) |
| Children's House & Montessori School | 6.1 |
Montessori | Ungraded-Ungraded | 17 | 5.7 | Nonsectarian |
| River City Christian School | 6.1 |
Special education | 1-12 | 104 | 7.0 | Christian (no specific denomination) |
| Christian Heritage Schools | 6.8 |
Regular elementary or secondary | KG-12 | 170 | 8.1 | Church of Christ |
| Harvest Schools | 7.2 |
Special program emphasis | Pre-KG-12 | 191 | 9.8 | Christian (no specific denomination) |
| Ewing Education Center | 7.4 |
Special education | Ungraded-Ungraded | 16 | 4.7 | Baptist |
| Holy Cross High School | 8.8 |
Regular elementary or secondary | 6-12 | 499 | 16.6 | Roman Catholic |
| Kriterion Montessori School | 9.5 |
Montessori | Ungraded-Ungraded | 120 | 20.0 | Nonsectarian |
| Keystone School | 9.6 |
Special program emphasis | KG-12 | 419 | 11.3 | Nonsectarian |
| The Circle School | 10.2 |
Alternative/other | Pre-KG-Pre-KG | 26 | 5.8 | Nonsectarian |
| Sunnybrook Christian Academy | 10.3 |
Regular elementary or secondary | 1-12 | 151 | 9.9 | Christian (no specific denomination) |
| Christian Academy Of San Antonio | 10.4 |
Regular elementary or secondary | Pre-KG-12 | 557 | 11.4 | Christian (no specific denomination) |
| Providence High School | 10.8 |
Regular elementary or secondary | 6-12 | 344 | 10.6 | Roman Catholic |
| Rainbow Hills Baptist School | 11.1 |
Regular elementary or secondary | Pre-KG-12 | 228 | 11.8 | Baptist |
| Trinity Christian Academy | 12.1 |
Regular elementary or secondary | KG-12 | 240 | 10.7 | Christian (no specific denomination) |
| Believers Academy | 12.8 |
Special program emphasis | KG-12 | 149 | 11.2 | Calvinist |
| Gateway Christian School | 13.8 |
Regular elementary or secondary | Pre-KG-12 | 63 | 12.6 | Baptist |
| Geneva School Of Boerne | 14.7 |
Regular elementary or secondary | KG-9 | 334 | 10.4 | Christian (no specific denomination) |
| Town East Christian School | 15.8 |
Regular elementary or secondary | Pre-KG-12 | 133 | 6.9 | Baptist |
| First Baptist Academy Of Universal City | 17.0 |
Regular elementary or secondary | Pre-KG-12 | 350 | 11.7 | Baptist |
| Bracken Christian School | 18.4 |
Regular elementary or secondary | Pre-KG-12 | 327 | 9.8 | Christian (no specific denomination) |
| Pipe Creek Christian School | 23.7 |
Regular elementary or secondary | Pre-KG-10 | 70 | 6.5 | Christian (no specific denomination) |
| Vanguard Christian Institute | 24.5 |
Regular elementary or secondary | Pre-KG-12 | 83 | 8.0 | Christian (no specific denomination) |
