| Live Oak School | 2.1 |
Special education | 6-12 | 45 | 9.0 | Nonsectarian |
| Cherry Valley Brethren Schools | 3.4 |
Regular elementary or secondary | KG-12 | 56 | 14.0 | Brethren |
| Childhelp School | 6.5 |
Special education | 1-12 | 76 | 10.9 | Nonsectarian |
| Calvary Christian School | 7.5 |
Regular elementary or secondary | KG-12 | 124 | 12.3 | Baptist |
| Calvary Chapel Christian School | 9.2 |
Regular elementary or secondary | KG-12 | 555 | 15.7 | Christian (no specific denomination) |
| Redlands Adventist Academy | 10.6 |
Regular elementary or secondary | KG-12 | 493 | 14.5 | Seventh-Day Adventist |
| Montessori In Redlands Inc | 11.5 |
Montessori | Pre-KG-9 | 164 | 9.7 | Nonsectarian |
| Kings Chapel Christian Academy | 11.9 |
Alternative/other | 3-12 | 16 | 8.0 | Christian (no specific denomination) |
| Benchmark Young Adult School | 12.0 |
Alternative/other | Ungraded-Ungraded | 50 | 12.5 | Nonsectarian |
| Packinghouse Christian Academy | 12.0 |
Regular elementary or secondary | KG-12 | 293 | 14.0 | Christian (no specific denomination) |
| Jesus Center Christian School | 12.5 |
Regular elementary or secondary | KG-11 | 26 | 9.0 | Christian (no specific denomination) |
| Abc Hope For Kids | 13.4 |
Special education | Pre-KG-12 | 28 | 9.3 | Nonsectarian |
| Loma Linda Academy | 14.1 |
Regular elementary or secondary | KG-12 | 1572 | 17.0 | Seventh-Day Adventist |
| Cornerstone Fellowship Academy | 14.2 |
Regular elementary or secondary | 1-10 | 16 | 1.8 | Christian (no specific denomination) |
| Berean Christian | 14.9 |
Regular elementary or secondary | KG-12 | 57 | 5.5 | Christian (no specific denomination) |
| Grace Prep School | 14.9 |
Alternative/other | Pre-KG-12 | 53 | 2.4 | Christian (no specific denomination) |
| Odell Young Alternative School | 16.6 |
Special education | 2-11 | 35 | 7.0 | Nonsectarian |
| Alpha Omega Christian School | 16.9 |
Regular elementary or secondary | KG-12 | 51 | 34.0 | Christian (no specific denomination) |
| Immanuel Baptist School | 17.1 |
Alternative/other | Pre-KG-12 | 66 | 13.8 | Baptist |
| Eagle Valley School | 17.3 |
Special education | 5-12 | 48 | 12.0 | Nonsectarian |
| American Christian Military Academy | 17.4 |
Regular elementary or secondary | 5-12 | 47 | 9.6 | Christian (no specific denomination) |
| Oak Grove At The Ranch | 17.9 |
Special education | 3-12 | 39 | 6.5 | Nonsectarian |
| Big Springs Center & School | 18.0 |
Special education | Ungraded-Ungraded | 15 | 1.9 | Nonsectarian |
| Baptist Christian School | 18.3 |
Regular elementary or secondary | KG-12 | 379 | 14.1 | Baptist |
| Fleet Adventure School | 18.3 |
Alternative/other | 1-12 | 14 | 7.0 | Nonsectarian |
| Praise Fellowship Christian Academy | 18.4 |
Regular elementary or secondary | KG-12 | 11 | 4.8 | Christian (no specific denomination) |
| Temple Learning Center | 19.2 |
Regular elementary or secondary | Pre-KG-12 | 31 | 10.3 | Christian (no specific denomination) |
| Woodcrest Christian School System | 19.8 |
Regular elementary or secondary | KG-12 | 1104 | 21.2 | Christian (no specific denomination) |
| Oliver Christian School Center | 19.8 |
Alternative/other | 2-12 | 11 | 1.8 | Christian (no specific denomination) |
| Gateway Education Center | 20.2 |
Regular elementary or secondary | KG-12 | 96 | 10.8 | Pentecostal |
| Lake Arrowhead Christian School | 20.4 |
Regular elementary or secondary | KG-12 | 118 | 12.6 | Christian (no specific denomination) |
| Somerset Educational Services | 21.0 |
Special education | KG-12 | 216 | 12.0 | Nonsectarian |
| Lighthouse Christian Academy | 21.2 |
Regular elementary or secondary | 2-11 | 7 | 2.3 | Christian (no specific denomination) |
| Lighthouse Christian Academy | 21.3 |
Regular elementary or secondary | KG-12 | 85 | 9.7 | Pentecostal |
| Bloomington Christian School | 21.4 |
Regular elementary or secondary | Pre-KG-12 | 903 | 14.8 | Church of the Nazarene |
| Altus Academy Rialto | 22.8 |
Special education | KG-12 | 57 | 11.4 | Nonsectarian |
| On Track Custom Learning Solutions | 23.6 |
Alternative/other | 5-12 | 65 | 16.2 | Nonsectarian |
| Riverside Christian Schools | 23.7 |
Regular elementary or secondary | Pre-KG-12 | 921 | 19.3 | Christian (no specific denomination) |
