| Cottage Hill Academy | 0.0 |
Special education | 6-12 | 32 | 4.0 | Nonsectarian |
| Applewild School | 13.0 |
Regular elementary or secondary | KG-9 | 282 | 7.8 | Nonsectarian |
| Stetson School | 14.1 |
Special education | 4-12 | 111 | 6.9 | Nonsectarian |
| Twin City Christian School | 15.8 |
Regular elementary or secondary | Pre-KG-12 | 191 | 12.2 | Baptist |
| Devereux School | 16.7 |
Special education | 1-12 | 114 | 6.7 | Nonsectarian |
| Sterling Nursery School | 18.0 |
Special education | Pre-KG-Pre-KG | 3 | 0.8 | Nonsectarian |
| Linden Hill School | 20.2 |
Special education | Ungraded-Ungraded | 24 | 2.5 | Nonsectarian |
| Mary Mcleod Bethune Institute | 20.7 |
Special program emphasis | 3-12 | 45 | 8.0 | Nonsectarian |
| South Lancaster Academy And Browning Elementary | 22.2 |
Regular elementary or secondary | Pre-KG-12 | 237 | 15.0 | Seventh-Day Adventist |
| Valley View School | 22.5 |
Alternative/other | Ungraded-Ungraded | 56 | 4.7 | Nonsectarian |
| Seven Hills Academy | 22.8 |
Special education | 4-12 | 60 | 14.6 | Nonsectarian |
| Rfk Lancaster School | 23.7 |
Special education | 4-12 | 36 | 1.1 | Nonsectarian |
| Jonathan Edwards Academy | 23.8 |
Regular elementary or secondary | KG-12 | 39 | 5.3 | Christian (no specific denomination) |
| Pepperell Christian Academy | 24.5 |
Regular elementary or secondary | Pre-KG-12 | 29 | 5.5 | Baptist |
| Mercy Centre | 24.5 |
Special education | Ungraded-Ungraded | 24 | 6.0 | Roman Catholic |
| Seven Hills At Groton | 24.6 |
Special education | 1-12 | 25 | 8.3 | Nonsectarian |
| Bancroft School | 24.7 |
Regular elementary or secondary | KG-12 | 562 | 7.7 | Nonsectarian |
