| Chesterfield Day School-st Albans | 0.0 |
Regular elementary or secondary | Pre-KG-12 | 124 | 11.4 | Nonsectarian |
| Crosspoint Christian School | 8.6 |
Regular elementary or secondary | Pre-KG-12 | 93 | 9.2 | Christian (no specific denomination) |
| Gateway Academy | 8.9 |
Regular elementary or secondary | Pre-KG-12 | 410 | 10.0 | Roman Catholic |
| The Principia School | 16.5 |
Regular elementary or secondary | Pre-KG-12 | 528 | 8.8 | Other |
| Whitfield School | 16.7 |
Regular elementary or secondary | 6-12 | 470 | 7.6 | Nonsectarian |
| Apprende Private School | 16.9 |
Regular elementary or secondary | Pre-KG-12 | 17 | 3.9 | Nonsectarian |
| Churchill Center & School | 17.8 |
Special education | 2-10 | 129 | 4.0 | Nonsectarian |
| Moog Center For Deaf Education | 17.9 |
Special education | Ungraded-Ungraded | 34 | 2.2 | Nonsectarian |
| Cornerstone Baptist Academy | 19.5 |
Regular elementary or secondary | KG-12 | 22 | 5.4 | Baptist |
| Foristell Baptist Academy | 19.7 |
Regular elementary or secondary | 1-11 | 11 | 2.2 | Baptist |
| Chaminade College Prep School | 20.5 |
Regular elementary or secondary | 6-12 | 867 | 9.5 | Roman Catholic |
| Mary Institute & St Louis Country Day School | 21.1 |
Regular elementary or secondary | Pre-KG-12 | 1207 | 8.9 | Nonsectarian |
| Christian Academy Of Greater St Louis | 21.6 |
Regular elementary or secondary | Pre-KG-12 | 164 | 9.8 | Church of Christ |
| The Miriam School | 21.8 |
Special education | Ungraded-Ungraded | 93 | 9.0 | Nonsectarian |
| People's Christian Academy | 21.9 |
Regular elementary or secondary | KG-12 | 65 | 8.9 | Assembly of God |
| Edgewood Children Center | 22.1 |
Special education | Ungraded-Ungraded | 160 | 8.4 | Nonsectarian |
| Ecc-childhaven | 22.1 |
Special education | Ungraded-Ungraded | 35 | 8.8 | Nonsectarian |
| Epworth School | 22.4 |
Special education | 4-12 | 73 | 9.1 | Nonsectarian |
| New Life Christian School | 22.7 |
Regular elementary or secondary | Pre-KG-12 | 123 | 12.3 | Pentecostal |
| Liberty Christian Academy | 22.9 |
Regular elementary or secondary | Pre-KG-12 | 80 | 8.9 | Christian (no specific denomination) |
| Christian Outreach School | 23.1 |
Regular elementary or secondary | Pre-KG-12 | 56 | 7.2 | Christian (no specific denomination) |
| Metropolitan School | 24.7 |
Special education | Ungraded-Ungraded | 42 | 5.2 | Nonsectarian |
