| Arlington Christian School | 7.8 |
Regular elementary or secondary | Pre-KG-12 | 72 | 10.3 | Christian (no specific denomination) |
| Academy Northwest/family Academy | 9.5 |
Alternative/other | 1-12 | 485 | 26.1 | Christian (no specific denomination) |
| Peaceful Glen Christian School | 10.8 |
Regular elementary or secondary | Pre-KG-12 | 66 | 8.5 | Christian (no specific denomination) |
| Montessori Schools Of Snohomish County | 10.8 |
Montessori | Ungraded-Ungraded | 75 | 10.0 | Nonsectarian |
| Island Christian Academy | 13.1 |
Regular elementary or secondary | KG-11 | 32 | 8.9 | Christian (no specific denomination) |
| The Clearwater School | 17.8 |
Alternative/other | Ungraded-Ungraded | 63 | 13.7 | Nonsectarian |
| Providence Classical Christian School | 19.4 |
Special program emphasis | Pre-KG-12 | 167 | 8.4 | Calvinist |
| Heritage Christian Academy | 21.2 |
Regular elementary or secondary | Pre-KG-9 | 140 | 7.6 | Baptist |
| Chrysalis School | 21.4 |
Alternative/other | KG-12 | 266 | 5.3 | Nonsectarian |
| Northwest Academy | 21.8 |
Regular elementary or secondary | KG-12 | 27 | 3.4 | Nonsectarian |
| Dartmoor School | 22.1 |
Regular elementary or secondary | 4-12 | 46 | 10.2 | Nonsectarian |
| Woodinville Montessori School | 22.4 |
Montessori | Pre-KG-9 | 176 | 8.7 | Nonsectarian |
| Cedar Park Christian Schools | 22.8 |
Regular elementary or secondary | Pre-KG-12 | 1528 | 15.2 | Assembly of God |
| King's Schools | 23.2 |
Regular elementary or secondary | Pre-KG-12 | 1215 | 16.1 | Christian (no specific denomination) |
| Countryside Montessori School | 24.4 |
Montessori | Pre-KG-Pre-KG | 20 | 6.7 | Nonsectarian |
| Shoreline Christian School | 24.5 |
Regular elementary or secondary | Pre-KG-12 | 254 | 10.9 | Christian (no specific denomination) |
| Mount Vernon Christian School | 24.9 |
Regular elementary or secondary | Pre-KG-12 | 313 | 13.0 | Christian (no specific denomination) |
