| Corpus Christi School | 3.4 |
Regular elementary or secondary | Pre-KG-8 | 373 | 14.0 | Roman Catholic |
| Northwest Childrens Center | 3.9 |
Early childhood program/child care center | Pre-KG-KG | 8 | 8.0 | Nonsectarian |
| Freeman's Montessori School | 3.9 |
Montessori | Pre-KG-KG | 3 | 1.5 | Nonsectarian |
| St Paul School | 5.1 |
Regular elementary or secondary | Pre-KG-8 | 212 | 15.8 | Roman Catholic |
| St Matthews Lutheran School | 5.2 |
Regular elementary or secondary | Pre-KG-5 | 40 | 5.6 | Lutheran Church - Missouri Synod |
| St Augustine School | 5.5 |
Regular elementary or secondary | Pre-KG-8 | 154 | 12.2 | Roman Catholic |
| Kindercare Learning Center | 5.6 |
Early childhood program/child care center | Pre-KG-KG | 8 | 1.0 | Nonsectarian |
| Sacred Heart School | 5.7 |
Regular elementary or secondary | Pre-KG-8 | 439 | 12.2 | Roman Catholic |
| Pope John Paul Ii | 5.8 |
Regular elementary or secondary | Pre-KG-8 | 168 | 12.2 | Roman Catholic |
| St Brigid School | 6.0 |
Regular elementary or secondary | Pre-KG-8 | 207 | 16.2 | Roman Catholic |
| Mooreland Hill School | 6.1 |
Regular elementary or secondary | 5-8 | 34 | 3.7 | Nonsectarian |
| St John School | 6.7 |
Regular elementary or secondary | Pre-KG-8 | 163 | 10.9 | Roman Catholic |
| Our Childrens Place | 6.9 |
Early childhood program/child care center | Pre-KG-KG | 10 | 10.0 | Nonsectarian |
| Roadside Academy | 7.1 |
Regular elementary or secondary | KG-8 | 45 | 7.5 | Nonsectarian |
| St Christopher School | 7.1 |
Regular elementary or secondary | Pre-KG-8 | 236 | 17.6 | Roman Catholic |
| St Mary School | 7.6 |
Regular elementary or secondary | Pre-KG-8 | 201 | 20.3 | Roman Catholic |
| Solomon Schechter Day School | 7.6 |
Regular elementary or secondary | Pre-KG-8 | 144 | 8.7 | Jewish |
| Kindercare Learning Center | 7.7 |
Early childhood program/child care center | Pre-KG-KG | 20 | 10.0 | Nonsectarian |
| St Sebastian School | 8.2 |
Regular elementary or secondary | Pre-KG-8 | 85 | 6.5 | Roman Catholic |
| Montessori School Greater Hartford | 8.4 |
Montessori | Pre-KG-6 | 58 | 11.6 | Nonsectarian |
| Shiloh Christian Academy | 8.4 |
Regular elementary or secondary | KG-5 | 17 | 8.5 | Christian (no specific denomination) |
| St Rose School | 8.9 |
Regular elementary or secondary | Pre-KG-8 | 129 | 14.7 | Roman Catholic |
| St Dominic School | 8.9 |
Regular elementary or secondary | Pre-KG-5 | 160 | 18.0 | Roman Catholic |
| Great Beginnings | 9.6 |
Early childhood program/child care center | Pre-KG-Trans. KG | 24 | 8.6 | Nonsectarian |
| Fellowship Christian Academy | 9.7 |
Regular elementary or secondary | Pre-KG-8 | 77 | 14.5 | Baptist |
| Middlefield Children's Center | 10.0 |
Early childhood program/child care center | Pre-KG-KG | 7 | 2.3 | Nonsectarian |
| Assumption School | 10.1 |
Regular elementary or secondary | Pre-KG-8 | 144 | 12.2 | Roman Catholic |
| St Timothy Middle School | 10.3 |
Regular elementary or secondary | 6-8 | 147 | 11.8 | Roman Catholic |
| The Independent Day School | 10.5 |
Regular elementary or secondary | Pre-KG-8 | 165 | 7.4 | Christian (no specific denomination) |
| Our Lady Of Mount Carmel School | 10.6 |
Regular elementary or secondary | Pre-KG-8 | 163 | 15.5 | Roman Catholic |
| St Joseph School | 10.8 |
Regular elementary or secondary | KG-8 | 207 | 16.4 | Roman Catholic |
| St Stanislaus School | 10.9 |
Regular elementary or secondary | Pre-KG-8 | 206 | 17.2 | Roman Catholic |
| St James School | 11.0 |
Regular elementary or secondary | Pre-KG-8 | 401 | 16.0 | Roman Catholic |
| Holy Seed Christian Academy | 11.4 |
Regular elementary or secondary | KG-8 | 29 | 7.2 | Christian (no specific denomination) |
| St Thomas School | 11.5 |
Regular elementary or secondary | Pre-KG-7 | 123 | 11.9 | Roman Catholic |
| St Matthew | 11.6 |
Regular elementary or secondary | Pre-KG-8 | 235 | 20.8 | Roman Catholic |
| The Bess And Paul Sigel Hebrew Academy | 12.0 |
Regular elementary or secondary | Pre-KG-8 | 110 | 6.9 | Jewish |
| St Bridget School | 12.0 |
Regular elementary or secondary | Pre-KG-8 | 175 | 13.6 | Roman Catholic |
| Community Child Guidance Clinic | 12.1 |
Special education | KG-KG | 35 | 5.0 | Nonsectarian |
| Talcott Mountain Academy Of Science, Mathematics | 12.2 |
Special program emphasis | KG-8 | 65 | 7.2 | Nonsectarian |
| Trinity Christian School | 12.3 |
Regular elementary or secondary | Pre-KG-8 | 138 | 10.7 | Christian (no specific denomination) |
| Kinder Garden Learning Center | 12.3 |
Early childhood program/child care center | Pre-KG-KG | 6 | 6.0 | Nonsectarian |
| Birch Mountain Day School | 12.5 |
Early childhood program/child care center | Pre-KG-KG | 10 | 2.0 | Nonsectarian |
| Creative Beginnings Learning Center | 12.6 |
Early childhood program/child care center | Pre-KG-KG | 18 | 9.0 | Nonsectarian |
| The Children's Place Inc | 12.8 |
Early childhood program/child care center | Pre-KG-KG | 7 | 7.0 | Nonsectarian |
| Child Dev Center At Bristol-myers Squibb | 13.3 |
Early childhood program/child care center | Pre-KG-KG | 12 | 6.0 | Nonsectarian |
| St Gabriel School | 13.3 |
Regular elementary or secondary | KG-8 | 195 | 15.7 | Roman Catholic |
| Building Blocks Learning Center | 13.4 |
Regular elementary or secondary | Pre-KG-KG | 13 | 5.7 | Nonsectarian |
| Farmington Valley Academy, Montessori | 13.4 |
Montessori | Pre-KG-8 | 51 | 5.7 | Nonsectarian |
| St Joseph School | 13.5 |
Regular elementary or secondary | Pre-KG-8 | 236 | 16.4 | Roman Catholic |
| Liberty Baptist Child Care | 13.7 |
Early childhood program/child care center | Pre-KG-KG | 3 | 3.0 | Baptist |
| Windsor Montessori School | 13.8 |
Montessori | Pre-KG-KG | 14 | 4.7 | Nonsectarian |
| Madina Academy | 13.8 |
Regular elementary or secondary | KG-8 | 84 | 8.2 | Islamic |
| St Anthony School | 13.8 |
Regular elementary or secondary | Pre-KG-8 | 126 | 15.9 | Roman Catholic |
| Immanuel Lutheran School | 14.0 |
Regular elementary or secondary | Pre-KG-8 | 144 | 11.7 | Lutheran Church - Missouri Synod |
| Hans Chr Andersen Montessori | 14.7 |
Montessori | Pre-KG-KG | 11 | 3.7 | Nonsectarian |
| Webb School At Cheshire | 15.1 |
Special education | 1-8 | 30 | 3.3 | Nonsectarian |
| Bright Horizons Day | 15.2 |
Early childhood program/child care center | Pre-KG-KG | 5 | 5.0 | Nonsectarian |
| The Cobb School Montessori | 15.2 |
Montessori | Pre-KG-6 | 89 | 13.1 | Nonsectarian |
| St Bridget School | 16.0 |
Regular elementary or secondary | Pre-KG-8 | 352 | 15.9 | Roman Catholic |
| Holy Trinity School | 16.0 |
Regular elementary or secondary | KG-8 | 228 | 20.9 | Roman Catholic |
| Wallingford Family Ymca All Day Kindergarten | 16.2 |
Early childhood program/child care center | KG-KG | 8 | 3.1 | Christian (no specific denomination) |
| The Burlington Academy Of Learning | 16.4 |
Early childhood program/child care center | Pre-KG-Trans. KG | 29 | 18.1 | Nonsectarian |
| St Mary School | 16.5 |
Regular elementary or secondary | Pre-KG-8 | 248 | 19.4 | Roman Catholic |
| Boulder Knoll Montessori School | 16.8 |
Montessori | Pre-KG-KG | 7 | 3.7 | Nonsectarian |
| St Joseph School | 18.0 |
Regular elementary or secondary | Pre-KG-8 | 130 | 11.3 | Roman Catholic |
| St Bernard School | 18.7 |
Regular elementary or secondary | Pre-KG-8 | 57 | 6.0 | Roman Catholic |
| New England Preschool Academy | 18.8 |
Early childhood program/child care center | Pre-KG-KG | 5 | 5.0 | Nonsectarian |
| Ss Peter & Paul School | 18.9 |
Regular elementary or secondary | Pre-KG-8 | 257 | 22.5 | Roman Catholic |
| Childrens Community School | 19.5 |
Regular elementary or secondary | Pre-KG-5 | 92 | 14.2 | Nonsectarian |
| Yeshiva K'tana Of Waterbury | 19.9 |
Regular elementary or secondary | Pre-KG-7 | 117 | 7.3 | Jewish |
| St Mary | 19.9 |
Regular elementary or secondary | Pre-KG-8 | 414 | 24.4 | Roman Catholic |
| Preschool Of The Arts Inc | 20.0 |
Early childhood program/child care center | Pre-KG-KG | 16 | 5.3 | Nonsectarian |
| St Francis Xavier School | 20.1 |
Regular elementary or secondary | Pre-KG-8 | 176 | 17.6 | Roman Catholic |
| Lighthouse Christian School | 20.4 |
Early childhood program/child care center | Pre-KG-KG | 9 | 11.2 | Baptist |
| Our Lady Of Mount Carmel School | 21.1 |
Regular elementary or secondary | Pre-KG-8 | 204 | 15.1 | Roman Catholic |
| Blessed Sacrament School | 21.2 |
Regular elementary or secondary | Pre-KG-8 | 300 | 28.6 | Roman Catholic |
| The Shoreline Christian School | 21.4 |
Regular elementary or secondary | KG-8 | 55 | 6.1 | Christian (no specific denomination) |
| St Mary Magdalen School | 21.5 |
Regular elementary or secondary | Pre-KG-8 | 246 | 23.2 | Roman Catholic |
| Mansfield Discovery Depot | 21.7 |
Early childhood program/child care center | Pre-KG-KG | 4 | 1.5 | Nonsectarian |
| St Hedwig School | 21.9 |
Regular elementary or secondary | Pre-KG-8 | 113 | 13.3 | Roman Catholic |
| Enfield Montessori School | 22.0 |
Montessori | Pre-KG-6 | 89 | 15.9 | Roman Catholic |
| Laurel Oaks Adventist School | 22.0 |
Regular elementary or secondary | 1-8 | 27 | 13.5 | Seventh-Day Adventist |
| Litchfield Montessori School | 22.2 |
Montessori | Pre-KG-6 | 64 | 6.8 | Nonsectarian |
| St Frances Of Assisi School | 22.7 |
Regular elementary or secondary | Pre-KG-8 | 169 | 15.5 | Roman Catholic |
| St John The Evangelist | 22.9 |
Regular elementary or secondary | Pre-KG-8 | 181 | 15.1 | Roman Catholic |
| St Bernard School | 23.0 |
Regular elementary or secondary | Pre-KG-8 | 258 | 19.4 | Roman Catholic |
| The Country School | 23.3 |
Regular elementary or secondary | Pre-KG-8 | 252 | 8.0 | Nonsectarian |
| Oak Grove Montessori Elem/pres | 23.4 |
Montessori | Pre-KG-6 | 50 | 9.1 | Nonsectarian |
| St Rita Elementary School | 24.2 |
Regular elementary or secondary | Pre-KG-8 | 409 | 17.6 | Roman Catholic |
| Sacred Heart Manor | 24.3 |
Early childhood program/child care center | Pre-KG-KG | 10 | 10.0 | Roman Catholic |
| St Mary St Joseph School | 24.5 |
Regular elementary or secondary | Pre-KG-8 | 119 | 9.7 | Roman Catholic |
| The Grammar School | 24.6 |
Regular elementary or secondary | KG-6 | 92 | 7.1 | Nonsectarian |
| St Stephen School | 24.7 |
Regular elementary or secondary | Pre-KG-8 | 165 | 15.0 | Roman Catholic |
| Windham Christian Academy | 24.8 |
Regular elementary or secondary | 1-8 | 37 | 9.2 | Assembly of God |
| St Peter/st Francis School | 25.0 |
Regular elementary or secondary | Pre-KG-8 | 192 | 13.7 | Roman Catholic |
| Shoreline School Of Montessori | 25.0 |
Montessori | Pre-KG-KG | 22 | 22.0 | Nonsectarian |
