| Williamsport Christian School | 0.0 |
Regular elementary or secondary | Pre-KG-12 | 39 | 5.7 | Baptist |
| Keystone Christian School Of Williamsport | 2.2 |
Regular elementary or secondary | Pre-KG-11 | 58 | 9.1 | Christian (no specific denomination) |
| Keystone Christian School | 2.2 |
Regular elementary or secondary | Pre-KG-11 | 64 | 8.5 | Christian (no specific denomination) |
| West Branch School | 4.5 |
Alternative/other | Ungraded-Ungraded | 36 | 9.0 | Nonsectarian |
| Spring View Parochial School | 12.5 |
Regular elementary or secondary | 1-9 | 28 | 28.0 | Amish |
| Watsontown Christian Academy | 12.8 |
Regular elementary or secondary | Pre-KG-12 | 41 | 4.3 | Christian (no specific denomination) |
| Maranatha Mennonite Christian School | 16.5 |
Regular elementary or secondary | KG-12 | 84 | 9.8 | Mennonite |
| Meadowbrook Christian School | 18.2 |
Regular elementary or secondary | Pre-KG-12 | 242 | 11.3 | Christian (no specific denomination) |
| Limestone Parochial School | 18.5 |
Regular elementary or secondary | 1-9 | 29 | 29.0 | Mennonite |
| Walnut Street Christian School | 19.0 |
Regular elementary or secondary | Pre-KG-12 | 141 | 11.5 | Baptist |
| Hillside Christian Academy | 19.7 |
Regular elementary or secondary | KG-12 | 55 | 14.1 | Other |
| Buffalo Creek Parochial School | 23.1 |
Regular elementary or secondary | 1-9 | 9 | 9.0 | Mennonite |
| Shady Grove Christian School | 24.6 |
Regular elementary or secondary | KG-11 | 73 | 9.4 | Mennonite |
