| Our Lady Lourdes Regional High School | 4.5 |
Regular elementary or secondary | KG-12 | 407 | 8.8 | Roman Catholic |
| Northwestern Academy | 7.1 |
Alternative/other | 5-12 | 268 | 11.7 | Nonsectarian |
| Sunbury Christian Academy | 8.6 |
Regular elementary or secondary | Pre-KG-12 | 134 | 8.4 | Christian (no specific denomination) |
| Northumberland Christian School | 9.6 |
Regular elementary or secondary | Pre-KG-12 | 209 | 13.9 | Baptist |
| Gospel Christian Academy | 12.6 |
Regular elementary or secondary | KG-11 | 23 | 5.0 | Baptist |
| Columbia County Christian School | 14.3 |
Regular elementary or secondary | KG-12 | 179 | 9.2 | Christian (no specific denomination) |
| Hegins Valley Mennonite School | 15.0 |
Regular elementary or secondary | 1-10 | 51 | 10.2 | Mennonite |
| Limestone Parochial School | 15.7 |
Regular elementary or secondary | 1-9 | 29 | 29.0 | Mennonite |
| Meadow View School | 16.0 |
Regular elementary or secondary | 1-9 | 25 | 25.0 | Mennonite |
| Meadowbrook Christian School | 16.1 |
Regular elementary or secondary | Pre-KG-12 | 242 | 11.3 | Christian (no specific denomination) |
| Emmanuel Wesleyan Academy | 17.1 |
Regular elementary or secondary | 1-11 | 29 | 9.7 | Methodist |
| Chapman Parochial School | 17.5 |
Regular elementary or secondary | 1-9 | 55 | 27.5 | Mennonite |
| Maranatha Mennonite Christian School | 17.7 |
Regular elementary or secondary | KG-12 | 84 | 9.8 | Mennonite |
| Bloomsburg Christian School | 18.1 |
Regular elementary or secondary | Pre-KG-12 | 52 | 6.2 | Baptist |
| Berrysburg Christian Academy | 18.5 |
Regular elementary or secondary | KG-12 | 29 | 9.7 | Brethren |
| Shady Grove Christian School | 18.8 |
Regular elementary or secondary | KG-11 | 73 | 9.4 | Mennonite |
| Watsontown Christian Academy | 21.3 |
Regular elementary or secondary | Pre-KG-12 | 41 | 4.3 | Christian (no specific denomination) |
| Spring View Parochial School | 21.6 |
Regular elementary or secondary | 1-9 | 28 | 28.0 | Amish |
| Leaning Oak School | 21.9 |
Regular elementary or secondary | 1-9 | 55 | 27.5 | Mennonite |
| Buffalo Creek Parochial School | 22.1 |
Regular elementary or secondary | 1-9 | 9 | 9.0 | Mennonite |
| Penn View Christian Academy | 22.6 |
Regular elementary or secondary | Pre-KG-12 | 142 | 10.1 | Other |
| St Joseph Center For Special L | 24.3 |
Special education | Ungraded-Ungraded | 18 | 6.0 | Roman Catholic |
| Hillside Christian Academy | 24.3 |
Regular elementary or secondary | KG-12 | 55 | 14.1 | Other |
