| Gospel Christian Academy | 0.0 |
Regular elementary or secondary | KG-11 | 23 | 5.0 | Baptist |
| Northumberland Christian School | 6.3 |
Regular elementary or secondary | Pre-KG-12 | 209 | 13.9 | Baptist |
| Meadow View School | 6.4 |
Regular elementary or secondary | 1-9 | 25 | 25.0 | Mennonite |
| Chapman Parochial School | 8.4 |
Regular elementary or secondary | 1-9 | 55 | 27.5 | Mennonite |
| Shady Grove Christian School | 8.4 |
Regular elementary or secondary | KG-11 | 73 | 9.4 | Mennonite |
| Sunbury Christian Academy | 8.6 |
Regular elementary or secondary | Pre-KG-12 | 134 | 8.4 | Christian (no specific denomination) |
| Leaning Oak School | 9.3 |
Regular elementary or secondary | 1-9 | 55 | 27.5 | Mennonite |
| Penn View Christian Academy | 10.6 |
Regular elementary or secondary | Pre-KG-12 | 142 | 10.1 | Other |
| Buffalo Creek Parochial School | 11.8 |
Regular elementary or secondary | 1-9 | 9 | 9.0 | Mennonite |
| Meadowview Christian Academy | 12.6 |
Regular elementary or secondary | Pre-KG-10 | 37 | 4.9 | Christian (no specific denomination) |
| Meadowbrook Christian School | 14.4 |
Regular elementary or secondary | Pre-KG-12 | 242 | 11.3 | Christian (no specific denomination) |
| Our Lady Lourdes Regional High School | 15.1 |
Regular elementary or secondary | KG-12 | 407 | 8.8 | Roman Catholic |
| Hillside Christian Academy | 15.1 |
Regular elementary or secondary | KG-12 | 55 | 14.1 | Other |
| Berrysburg Christian Academy | 15.3 |
Regular elementary or secondary | KG-12 | 29 | 9.7 | Brethren |
| Emmanuel Wesleyan Academy | 15.8 |
Regular elementary or secondary | 1-11 | 29 | 9.7 | Methodist |
| Limestone Parochial School | 16.8 |
Regular elementary or secondary | 1-9 | 29 | 29.0 | Mennonite |
| Maranatha Mennonite Christian School | 18.1 |
Regular elementary or secondary | KG-12 | 84 | 9.8 | Mennonite |
| Northwestern Academy | 18.6 |
Alternative/other | 5-12 | 268 | 11.7 | Nonsectarian |
| Watsontown Christian Academy | 19.5 |
Regular elementary or secondary | Pre-KG-12 | 41 | 4.3 | Christian (no specific denomination) |
| Spring View Parochial School | 19.7 |
Regular elementary or secondary | 1-9 | 28 | 28.0 | Amish |
| Good Will Mennonite School | 21.7 |
Regular elementary or secondary | 1-9 | 30 | 8.3 | Mennonite |
| Armstrong Valley Christian School | 22.7 |
Regular elementary or secondary | Ungraded-Ungraded | 22 | 7.3 | Baptist |
| Hegins Valley Mennonite School | 23.5 |
Regular elementary or secondary | 1-10 | 51 | 10.2 | Mennonite |
| Columbia County Christian School | 24.0 |
Regular elementary or secondary | KG-12 | 179 | 9.2 | Christian (no specific denomination) |
| Juniata Mennonite School | 24.5 |
Regular elementary or secondary | KG-12 | 215 | 11.6 | Mennonite |
