| Corona Christian School | 1.5 |
Regular elementary or secondary | Pre-KG-12 | 15 | 7.9 | Christian (no specific denomination) |
| Amor Christian Academy | 1.6 |
Regular elementary or secondary | 1-12 | 41 | 8.2 | Christian (no specific denomination) |
| Grace Christian Academy | 2.1 |
Regular elementary or secondary | Pre-KG-12 | 197 | 14.1 | Baptist |
| La Sierra Academy | 6.3 |
Regular elementary or secondary | KG-12 | 819 | 20.5 | Seventh-Day Adventist |
| Uhs Schools, Riverside Formerly Known As Keystone | 8.3 |
Special education | Ungraded-Ungraded | 185 | 10.3 | Nonsectarian |
| Riverside Christian Schools | 10.0 |
Regular elementary or secondary | Pre-KG-12 | 921 | 19.3 | Christian (no specific denomination) |
| Montecito Baptist School | 10.3 |
Regular elementary or secondary | KG-12 | 98 | 11.5 | Baptist |
| Vineyard Christian School | 12.0 |
Regular elementary or secondary | Pre-KG-12 | 329 | 17.0 | Christian (no specific denomination) |
| California Ranch School | 12.5 |
Regular elementary or secondary | 1-12 | 12 | 10.9 | Nonsectarian |
| Carbon Canyon Christian School | 12.6 |
Regular elementary or secondary | 1-12 | 40 | 4.4 | Christian (no specific denomination) |
| Somerset Educational Services | 13.2 |
Special education | KG-12 | 216 | 12.0 | Nonsectarian |
| Eldorado School/emerson Honors | 13.7 |
Special program emphasis | Pre-KG-12 | 167 | 8.6 | Nonsectarian |
| Hope Christian | 14.1 |
Alternative/other | KG-12 | 61 | 1.9 | Christian (no specific denomination) |
| Orange Hills | 14.1 |
Regular elementary or secondary | Pre-KG-10 | 40 | 5.3 | Assembly of God |
| Woodcrest Christian School System | 14.4 |
Regular elementary or secondary | KG-12 | 1104 | 21.2 | Christian (no specific denomination) |
| The Eirich | 14.7 |
Regular elementary or secondary | 1-11 | 7 | 3.7 | Nonsectarian |
| San Antonio Christian School | 14.8 |
Regular elementary or secondary | KG-10 | 89 | 14.6 | Seventh-Day Adventist |
| St Michael The Archangel Academy | 14.9 |
Alternative/other | KG-12 | 221 | 221.0 | Roman Catholic |
| Pyramid Autism Center | 15.2 |
Special education | Ungraded-Ungraded | 19 | 4.8 | Nonsectarian |
| Spirit Academy | 15.3 |
Regular elementary or secondary | KG-12 | 196 | 9.4 | Christian (no specific denomination) |
| Upland Christian Schools | 15.5 |
Regular elementary or secondary | KG-12 | 607 | 15.2 | Church of the Nazarene |
| Fulbright Montessori Academy | 15.5 |
Early childhood program/child care center | Pre-KG-Pre-KG | 21 | 21.0 | Nonsectarian |
| Marywood-palm Valley School | 15.5 |
Regular elementary or secondary | Pre-KG-12 | 415 | 8.4 | Nonsectarian |
| Gospel Restoration Academy | 15.7 |
Regular elementary or secondary | Pre-KG-12 | 18 | 3.0 | Church of God |
| Big Springs Center & School | 16.8 |
Special education | Ungraded-Ungraded | 15 | 1.9 | Nonsectarian |
| Eastside Christian Schools | 16.9 |
Regular elementary or secondary | Pre-KG-12 | 410 | 12.3 | Christian (no specific denomination) |
| The Master's Academy | 17.4 |
Regular elementary or secondary | KG-12 | 50 | 2.5 | Christian (no specific denomination) |
| Faith Christian Academy Of The Cma | 17.8 |
Regular elementary or secondary | KG-12 | 29 | 8.5 | Christian (no specific denomination) |
| Mardan School | 18.0 |
Special education | KG-12 | 48 | 4.4 | Nonsectarian |
| Bloomington Christian School | 18.1 |
Regular elementary or secondary | Pre-KG-12 | 903 | 14.8 | Church of the Nazarene |
| City Of Knowledge School | 18.1 |
Regular elementary or secondary | Pre-KG-12 | 233 | 13.0 | Islamic |
| Saddleback Christian Academy | 18.2 |
Alternative/other | KG-12 | 278 | 2.0 | Christian (no specific denomination) |
| Agape Academy | 18.2 |
Regular elementary or secondary | 1-12 | 78 | 4.0 | Christian (no specific denomination) |
| Ivy League School | 18.2 |
Regular elementary or secondary | 1-12 | 114 | 9.1 | Nonsectarian |
| Montessori On The Lake | 18.3 |
Montessori | Ungraded-Ungraded | 172 | 9.3 | Nonsectarian |
| Immanuel Baptist School | 18.3 |
Alternative/other | Pre-KG-12 | 66 | 13.8 | Baptist |
| Tutor Time Learning Center | 18.4 |
Special program emphasis | Ungraded-Ungraded | 7 | 4.4 | Nonsectarian |
| Lighthouse Christian Academy | 18.5 |
Regular elementary or secondary | KG-12 | 85 | 9.7 | Pentecostal |
| Altus Academy Rialto | 18.6 |
Special education | KG-12 | 57 | 11.4 | Nonsectarian |
| Sea Star-a School For Neuroeducation | 18.8 |
Special education | 6-12 | 14 | 3.5 | Nonsectarian |
| J Decasas Academy | 18.8 |
Special education | 5-10 | 10 | 3.2 | Nonsectarian |
| Crystal Cathedral Academy | 19.1 |
Special program emphasis | KG-12 | 366 | 12.0 | Other |
| Haynes Education Center | 19.1 |
Special education | 2-12 | 99 | 7.6 | Nonsectarian |
| Joan Macy School | 19.1 |
Special education | 6-12 | 44 | 5.9 | Nonsectarian |
| Heritage Christian School | 19.3 |
Regular elementary or secondary | Pre-KG-11 | 59 | 6.7 | Christian (no specific denomination) |
| New Vista School | 19.3 |
Special education | 6-12 | 39 | 4.9 | Nonsectarian |
| The Art House | 19.4 |
Alternative/other | Ungraded-Ungraded | 200 | 500.0 | Nonsectarian |
| Oak Grove At The Ranch | 19.4 |
Special education | 3-12 | 39 | 6.5 | Nonsectarian |
| Calvary Baptist Schools | 19.5 |
Regular elementary or secondary | Pre-KG-12 | 95 | 4.8 | Baptist |
| Cornerstone Fellowship Academy | 19.5 |
Regular elementary or secondary | 1-10 | 16 | 1.8 | Christian (no specific denomination) |
| Saints Of Glory School | 19.6 |
Regular elementary or secondary | KG-12 | 25 | 4.3 | Christian (no specific denomination) |
| La Palma Preschool And Kindergarten | 19.9 |
Montessori | Ungraded-Ungraded | 15 | 5.0 | Nonsectarian |
| Learning Spot Child Develpoment Center, The | 19.9 |
Early childhood program/child care center | Ungraded-Ungraded | 30 | 10.3 | Nonsectarian |
| Orangewood Academy | 19.9 |
Regular elementary or secondary | Pre-KG-12 | 247 | 14.1 | Seventh-Day Adventist |
| Canyon View School | 20.0 |
Special education | KG-12 | 109 | 9.1 | Nonsectarian |
| Alternative Educational Services | 20.3 |
Alternative/other | Ungraded-Ungraded | 15 | 6.5 | Nonsectarian |
| Committed Christian School | 20.4 |
Alternative/other | 1-12 | 68 | 5.7 | Christian (no specific denomination) |
| Hbic/the Cleta Harder Developmental School | 20.7 |
Special education | Ungraded-Ungraded | 30 | 7.5 | Nonsectarian |
| Lighthouse Christian Academy | 20.9 |
Regular elementary or secondary | 2-11 | 7 | 2.3 | Christian (no specific denomination) |
| Quest Academy Inc | 21.3 |
Special education | KG-12 | 60 | 10.0 | Nonsectarian |
| Praise Fellowship Christian Academy | 21.3 |
Regular elementary or secondary | KG-12 | 11 | 4.8 | Christian (no specific denomination) |
| Sovereign Grace Academy | 21.3 |
Alternative/other | 1-12 | 12 | 3.3 | Baptist |
| Live Oak Canyon School | 21.5 |
Special education | 2-12 | 38 | 8.3 | Nonsectarian |
| Covina Baptist Academy | 21.6 |
Regular elementary or secondary | KG-12 | 25 | 6.9 | Baptist |
| Anaheim Discovery Christian Jr High | 21.7 |
Regular elementary or secondary | 6-12 | 83 | 8.7 | Christian (no specific denomination) |
| Anaheim Discovery Christian Jr/sr High | 21.7 |
Regular elementary or secondary | 6-12 | 83 | 8.5 | Christian (no specific denomination) |
| Tarbut V'torah Community Day School | 21.7 |
Regular elementary or secondary | KG-12 | 600 | 9.5 | Jewish |
| Kings Chapel Christian Academy | 21.7 |
Alternative/other | 3-12 | 16 | 8.0 | Christian (no specific denomination) |
| Acaciawood School | 21.9 |
Regular elementary or secondary | 1-12 | 121 | 8.1 | Nonsectarian |
| Calvary Chapel High/maranatha Christian Academy | 22.0 |
Regular elementary or secondary | KG-12 | 1705 | 21.0 | Christian (no specific denomination) |
| Bethel Baptist School | 22.1 |
Regular elementary or secondary | KG-12 | 291 | 15.9 | Baptist |
| Padre Pio Academy | 22.3 |
Regular elementary or secondary | 1-12 | 46 | 5.2 | Roman Catholic |
| Bethel Baptist Academy | 22.7 |
Alternative/other | KG-12 | 153 | 4.5 | Baptist |
| Temple Learning Center | 22.7 |
Regular elementary or secondary | Pre-KG-12 | 31 | 10.3 | Christian (no specific denomination) |
| Covenant Christian Academy | 22.8 |
Regular elementary or secondary | KG-9 | 39 | 10.8 | Presbyterian |
| Loma Linda Academy | 22.8 |
Regular elementary or secondary | KG-12 | 1572 | 17.0 | Seventh-Day Adventist |
| Western Christian Isp | 22.9 |
Alternative/other | KG-12 | 496 | 50.6 | Christian (no specific denomination) |
| Newport Christian School | 22.9 |
Regular elementary or secondary | Pre-KG-10 | 89 | 8.6 | Baptist |
| Morning Star Christian School | 23.1 |
Regular elementary or secondary | KG-12 | 74 | 8.6 | Christian (no specific denomination) |
| Orange County Christian School | 23.8 |
Regular elementary or secondary | Pre-KG-12 | 250 | 13.2 | Church of Christ |
| Eagle Valley School | 24.0 |
Special education | 5-12 | 48 | 12.0 | Nonsectarian |
| Rossier Park School | 24.0 |
Special education | 5-12 | 164 | 10.2 | Nonsectarian |
| Abc Hope For Kids | 24.1 |
Special education | Pre-KG-12 | 28 | 9.3 | Nonsectarian |
| Calvary Christian School | 24.3 |
Regular elementary or secondary | 6-12 | 7 | 3.5 | Pentecostal |
| Christbridge Academy | 24.4 |
Regular elementary or secondary | 2-12 | 69 | 5.8 | Christian (no specific denomination) |
| Calvary Chapel Christian School | 24.6 |
Regular elementary or secondary | KG-12 | 555 | 15.7 | Christian (no specific denomination) |
| Sycamore Tree, The | 24.6 |
Alternative/other | KG-12 | 300 | 11.5 | Nonsectarian |
| Speech And Language Development Center | 24.7 |
Special education | Pre-KG-12 | 166 | 7.2 | Nonsectarian |
| Montessori In Redlands Inc | 24.7 |
Montessori | Pre-KG-9 | 164 | 9.7 | Nonsectarian |
| Barbara Dawson Ed Ctr | 24.7 |
Special education | 1-12 | 39 | 7.8 | Nonsectarian |
| Benchmark Young Adult School | 24.8 |
Alternative/other | Ungraded-Ungraded | 50 | 12.5 | Nonsectarian |
| Laguna Niguel Jr Academy | 25.0 |
Regular elementary or secondary | KG-10 | 55 | 11.2 | Seventh-Day Adventist |
