| Faith Bible Christian School | 2.2 |
Regular elementary or secondary | Pre-KG-12 | 349 | 13.7 | Christian (no specific denomination) |
| Cor Deo Christian Academy | 2.2 |
Regular elementary or secondary | 1-10 | 72 | 6.9 | Christian (no specific denomination) |
| Catlin Gabel School | 2.4 |
Regular elementary or secondary | Pre-KG-12 | 708 | 8.3 | Nonsectarian |
| Oregon Episcopal School | 2.5 |
Regular elementary or secondary | Pre-KG-12 | 812 | 9.0 | Episcopal |
| Islamic School Of Met (ismet) | 2.8 |
Regular elementary or secondary | Pre-KG-9 | 104 | 7.7 | Islamic |
| Westgate Christian School | 3.1 |
Regular elementary or secondary | Pre-KG-12 | 155 | 18.0 | Baptist |
| Palace Of Praise Academy | 3.8 |
Regular elementary or secondary | KG-11 | 26 | 4.0 | Pentecostal |
| Life Christian School | 4.3 |
Regular elementary or secondary | Pre-KG-12 | 271 | 17.1 | Christian (no specific denomination) |
| Tualatin Valley Jr Academy | 5.2 |
Regular elementary or secondary | Pre-KG-10 | 251 | 15.4 | Seventh-Day Adventist |
| The Northwest Academy | 6.3 |
Special program emphasis | 6-12 | 115 | 4.5 | Nonsectarian |
| La Petite Academy | 7.7 |
Early childhood program/child care center | Ungraded-Ungraded | 45 | 22.5 | Nonsectarian |
| Heritage Christian School | 8.0 |
Special program emphasis | KG-12 | 204 | 12.1 | Christian (no specific denomination) |
| Portland Waldorf School | 8.5 |
Special program emphasis | KG-12 | 363 | 6.3 | Nonsectarian |
| Lents Education Center | 9.4 |
Alternative/other | 6-10 | 33 | 6.6 | Nonsectarian |
| Horizon Christian High School | 9.4 |
Regular elementary or secondary | KG-12 | 483 | 12.6 | Other |
| Park Academy | 9.6 |
Special education | 3-11 | 21 | 4.9 | Nonsectarian |
| Village Free School | 11.3 |
Regular elementary or secondary | 1-12 | 45 | 4.6 | Nonsectarian |
| Portland Youth Builders | 11.5 |
Special program emphasis | Ungraded-Ungraded | 60 | 5.7 | Nonsectarian |
| Columbia Christian Schools | 11.7 |
Regular elementary or secondary | Pre-KG-12 | 246 | 11.2 | Church of Christ |
| City Christian Schools | 12.3 |
Regular elementary or secondary | Pre-KG-12 | 231 | 10.4 | Christian (no specific denomination) |
| Portland Christian Schools | 13.6 |
Regular elementary or secondary | 6-12 | 372 | 12.4 | Christian (no specific denomination) |
| Portland Christian School | 13.6 |
Regular elementary or secondary | 6-12 | 372 | 11.5 | Christian (no specific denomination) |
| Laurelwood Elementary School | 14.1 |
Regular elementary or secondary | KG-9 | 14 | 7.0 | Seventh-Day Adventist |
| Serendipity Center | 14.4 |
Special education | KG-12 | 133 | 9.2 | Nonsectarian |
| Open Bible Christian School | 14.5 |
Regular elementary or secondary | Pre-KG-12 | 99 | 11.5 | Christian (no specific denomination) |
| Veritas School | 14.8 |
Regular elementary or secondary | KG-12 | 254 | 12.7 | Christian (no specific denomination) |
| Serp Alternative School | 15.0 |
Special education | Ungraded-Ungraded | 15 | 15.0 | Nonsectarian |
| Cs Lewis Academy | 15.2 |
Regular elementary or secondary | Pre-KG-12 | 225 | 10.2 | Christian (no specific denomination) |
| Cyfs School | 15.2 |
Special education | 5-12 | 21 | 10.5 | Nonsectarian |
| North Clackamas Christian School | 15.8 |
Regular elementary or secondary | Pre-KG-12 | 218 | 14.1 | Christian (no specific denomination) |
| Portland Lutheran School | 16.1 |
Regular elementary or secondary | Pre-KG-12 | 225 | 15.1 | Lutheran Church - Missouri Synod |
| Damascus Christian School | 17.9 |
Regular elementary or secondary | KG-12 | 255 | 8.8 | Christian (no specific denomination) |
| Open Door Christian Academy | 20.9 |
Regular elementary or secondary | Pre-KG-12 | 290 | 19.6 | Baptist |
| Banks Christian Academy | 23.3 |
Regular elementary or secondary | Pre-KG-10 | 77 | 10.6 | Christian (no specific denomination) |
| Elliott Prairie Christian School | 24.4 |
Regular elementary or secondary | 5-12 | 14 | 7.0 | Mennonite |
