| Plainfield Catholic School | 6.2 |
Regular elementary or secondary | Pre-KG-8 | 127 | 12.1 | Roman Catholic |
| Tri-state Christian Academy | 8.4 |
Regular elementary or secondary | KG-8 | 34 | 6.1 | Christian (no specific denomination) |
| St Mary School | 8.5 |
Regular elementary or secondary | Pre-KG-8 | 112 | 11.1 | Roman Catholic |
| St Joseph School | 12.3 |
Regular elementary or secondary | Pre-KG-8 | 104 | 9.2 | Roman Catholic |
| St Maryour Lady Of The Rosary School | 14.3 |
Regular elementary or secondary | Pre-KG-8 | 40 | 4.4 | Roman Catholic |
| Mt Hope Montessori School | 15.8 |
Montessori | Pre-KG-KG | 10 | 1.8 | Nonsectarian |
| St Joseph Elementary School | 16.7 |
Regular elementary or secondary | Pre-KG-8 | 81 | 7.4 | Roman Catholic |
| Windham Christian Academy | 17.6 |
Regular elementary or secondary | 1-8 | 37 | 9.2 | Assembly of God |
| St Mary St Joseph School | 17.8 |
Regular elementary or secondary | Pre-KG-8 | 119 | 9.7 | Roman Catholic |
| Sacred Heart School | 18.5 |
Regular elementary or secondary | KG-8 | 158 | 13.1 | Roman Catholic |
| Kidderbrook Montessori School | 18.5 |
Montessori | Pre-KG-KG | 4 | 4.0 | Nonsectarian |
| Oak Grove Montessori Elem/pres | 18.7 |
Montessori | Pre-KG-6 | 50 | 9.1 | Nonsectarian |
| Stoneview Children's Academy | 20.8 |
Montessori | Pre-KG-2 | 10 | 5.0 | Nonsectarian |
| St Patrick Cathedral School | 21.2 |
Regular elementary or secondary | KG-8 | 202 | 19.1 | Roman Catholic |
| St Joseph School | 21.3 |
Regular elementary or secondary | Pre-KG-8 | 114 | 9.1 | Roman Catholic |
| Mansfield Discovery Depot | 21.5 |
Early childhood program/child care center | Pre-KG-KG | 4 | 1.5 | Nonsectarian |
| Mayflower Montessori School | 21.5 |
Montessori | Pre-KG-KG | 6 | 3.0 | Nonsectarian |
| Lighthouse Christian School | 21.7 |
Early childhood program/child care center | Pre-KG-KG | 9 | 11.2 | Baptist |
| Montessori Discovery School | 22.0 |
Montessori | Pre-KG-7 | 43 | 5.2 | Nonsectarian |
| Wildwood Christian School | 23.2 |
Regular elementary or secondary | Pre-KG-8 | 63 | 10.7 | Christian (no specific denomination) |
| St Edward School | 24.2 |
Regular elementary or secondary | Pre-KG-8 | 100 | 10.0 | Roman Catholic |
