| New Testament Baptist Church School | 2.6 |
Regular elementary or secondary | Pre-KG-12 | 110 | 9.9 | Baptist |
| Oak Hill School | 3.6 |
Special education | Ungraded-Ungraded | 72 | 8.0 | Nonsectarian |
| Oak Hill School At Bristol | 3.6 |
Special education | Ungraded-Ungraded | 10 | 10.0 | Nonsectarian |
| Sinai School/st Francis Hosp/med Ch | 3.6 |
Special education | 1-12 | 16 | 4.8 | Nonsectarian |
| Hartford Area Sd A School | 3.9 |
Regular elementary or secondary | Pre-KG-10 | 86 | 9.2 | Seventh-Day Adventist |
| The Grace S Webb School | 4.4 |
Special education | 1-12 | 170 | 4.4 | Nonsectarian |
| Watkinson School | 4.7 |
Regular elementary or secondary | 6-12 | 275 | 7.0 | Nonsectarian |
| Praise, Power & Prayer Christian School | 4.9 |
Regular elementary or secondary | KG-12 | 74 | 12.3 | Pentecostal |
| The Cornerstone Christian School | 5.3 |
Regular elementary or secondary | Pre-KG-12 | 202 | 11.9 | Church of the Nazarene |
| Gengras Center/st Joseph College | 5.6 |
Special education | Ungraded-Ungraded | 125 | 3.1 | Nonsectarian |
| Kingswood-oxford School | 6.3 |
Regular elementary or secondary | 6-12 | 595 | 7.5 | Nonsectarian |
| Intensive Education Academy In | 6.3 |
Special education | 2-12 | 63 | 5.8 | Nonsectarian |
| American School For The Deaf | 6.5 |
Special education | Pre-KG-12 | 196 | 3.5 | Nonsectarian |
| Ben Bronz Academy | 6.5 |
Special education | 4-12 | 57 | 3.5 | Nonsectarian |
| Ccmc School | 6.5 |
Special education | 2-12 | 119 | 5.8 | Nonsectarian |
| Emmanuel Christian Academy | 10.4 |
Regular elementary or secondary | KG-12 | 160 | 15.8 | Baptist |
| Ethel Walker School | 11.4 |
Regular elementary or secondary | 6-12 | 266 | 7.0 | Nonsectarian |
| Mountain Laurel Sudbury School | 12.4 |
Special program emphasis | 4-12 | 8 | 2.6 | Nonsectarian |
| Raymond Hill School | 13.3 |
Special education | KG-12 | 82 | 5.5 | Nonsectarian |
| The Learning Center | 13.8 |
Special education | 4-12 | 58 | 3.6 | Other |
| The Master's School | 14.7 |
Regular elementary or secondary | Pre-KG-12 | 272 | 7.0 | Christian (no specific denomination) |
| Heritage Christian School | 18.1 |
Regular elementary or secondary | KG-11 | 16 | 4.4 | Pentecostal |
| Oak Hill School At Ann Antolini School | 20.3 |
Special education | Ungraded-Ungraded | 10 | 7.1 | Christian (no specific denomination) |
| Natchany Hospital School-consolidated | 22.4 |
Special education | KG-12 | 125 | 5.3 | Nonsectarian |
| Benhaven School | 24.4 |
Special education | Ungraded-Ungraded | 35 | 5.8 | Nonsectarian |
| Torrington Christian Academy | 24.5 |
Regular elementary or secondary | Pre-KG-12 | 115 | 12.1 | Assembly of God |
