| North Shore Montessori | 0.0 |
Montessori | Pre-KG-KG | 19 | 4.8 | Nonsectarian |
| Harbor Country Day School | 2.5 |
Regular elementary or secondary | Pre-KG-8 | 120 | 8.6 | Nonsectarian |
| Sts Philip And James School | 3.1 |
Regular elementary or secondary | Pre-KG-8 | 284 | 15.3 | Roman Catholic |
| Kiddie Academy E Setauket | 3.4 |
Early childhood program/child care center | Pre-KG-KG | 14 | 14.0 | Nonsectarian |
| Our Lady Of Wisdom Regional School | 4.3 |
Regular elementary or secondary | KG-8 | 219 | 15.8 | Roman Catholic |
| North Shore Christian School | 5.1 |
Regular elementary or secondary | Pre-KG-8 | 108 | 5.7 | Baptist |
| St Patrick Elementary School | 5.1 |
Regular elementary or secondary | Pre-KG-8 | 441 | 17.9 | Roman Catholic |
| Maimonides Day School | 6.1 |
Regular elementary or secondary | Pre-KG-6 | 11 | 3.2 | Jewish |
| Montessori School Of Selden | 7.2 |
Early childhood program/child care center | Pre-KG-KG | 7 | 7.0 | Nonsectarian |
| Ivy League School | 7.3 |
Regular elementary or secondary | Pre-KG-5 | 76 | 8.8 | Nonsectarian |
| St Joseph School | 7.5 |
Regular elementary or secondary | Pre-KG-8 | 186 | 12.5 | Roman Catholic |
| Ca Montessori Children's Center | 7.9 |
Early childhood program/child care center | Pre-KG-KG | 16 | 4.6 | Nonsectarian |
| Jkl Montessori School | 8.5 |
Montessori | Pre-KG-Trans. KG | 3 | 0.5 | Nonsectarian |
| Holy Family Regional School | 8.7 |
Regular elementary or secondary | Pre-KG-8 | 317 | 12.9 | Roman Catholic |
| Tutor Time | 9.1 |
Early childhood program/child care center | Pre-KG-KG | 8 | 8.0 | Nonsectarian |
| Step By Step Early Learning Center | 9.3 |
Montessori | Pre-KG-Trans. KG | 11 | 5.5 | Nonsectarian |
| St Pauls Lutheran School | 9.9 |
Regular elementary or secondary | Pre-KG-3 | 118 | 11.9 | Evangelical Lutheran Church in America |
| Our Lady Of Providence Regional School | 10.0 |
Regular elementary or secondary | Pre-KG-8 | 280 | 17.5 | Roman Catholic |
| Trinity Regional School-east Newport Campus | 10.0 |
Regular elementary or secondary | KG-8 | 476 | 17.4 | Roman Catholic |
| Kids Place Early Childhood Day School | 10.1 |
Montessori | Pre-KG-KG | 11 | 11.0 | Nonsectarian |
| Solomon Schechter Day School | 10.5 |
Regular elementary or secondary | KG-8 | 55 | 3.6 | Jewish |
| Love Of Learning Montessori | 12.1 |
Montessori | Pre-KG-4 | 64 | 8.4 | Nonsectarian |
| Love Of Learning Montessori-dix Hills Campus | 12.1 |
Montessori | Pre-KG-4 | 67 | 8.8 | Nonsectarian |
| Ebenezer Christian Academy | 12.7 |
Regular elementary or secondary | Pre-KG-4 | 53 | 13.2 | Assembly of God |
| Emanuel Lutheran School | 13.0 |
Regular elementary or secondary | Pre-KG-8 | 113 | 8.5 | Lutheran Church - Missouri Synod |
| Holy Angels Regional School | 13.1 |
Regular elementary or secondary | KG-8 | 385 | 16.8 | Roman Catholic |
| Prince Of Peace Regional School | 13.3 |
Regular elementary or secondary | Pre-KG-8 | 172 | 11.6 | Roman Catholic |
| Mdq Academy | 13.3 |
Regular elementary or secondary | Pre-KG-3 | 51 | 7.3 | Islamic |
| St Elizabeth | 13.4 |
Regular elementary or secondary | Pre-KG-8 | 212 | 19.6 | Roman Catholic |
| West Sayville Christian School | 13.7 |
Regular elementary or secondary | KG-8 | 74 | 6.8 | Christian (no specific denomination) |
| St Mary School | 13.7 |
Regular elementary or secondary | Pre-KG-8 | 426 | 12.5 | Roman Catholic |
| Kindercare Learning Center-huntington | 13.7 |
Early childhood program/child care center | Pre-KG-KG | 10 | 10.0 | Nonsectarian |
| Heritage Baptist Church | 14.2 |
Regular elementary or secondary | Pre-KG-3 | 16 | 4.0 | Christian (no specific denomination) |
| Bay Shore Christian School | 14.9 |
Regular elementary or secondary | Pre-KG-3 | 32 | 10.7 | Assembly of God |
| Ss Cyril And Methodius School | 15.2 |
Regular elementary or secondary | Pre-KG-8 | 232 | 12.6 | Roman Catholic |
| St Patrick's School | 15.5 |
Regular elementary or secondary | Pre-KG-8 | 648 | 19.1 | Roman Catholic |
| The Hobbits Castle | 15.6 |
Regular elementary or secondary | Pre-KG-2 | 10 | 5.0 | Nonsectarian |
| Our Lady Of Lourdes School | 15.9 |
Regular elementary or secondary | Pre-KG-8 | 248 | 16.4 | Roman Catholic |
| St Patrick School | 16.1 |
Regular elementary or secondary | Pre-KG-8 | 369 | 16.5 | Roman Catholic |
| St Peter S By-the-sea Day School | 16.2 |
Regular elementary or secondary | Pre-KG-7 | 113 | 6.6 | Episcopal |
| West Hills Montessori School | 18.0 |
Montessori | Pre-KG-6 | 23 | 2.5 | Nonsectarian |
| Babylon Christian School | 18.3 |
Regular elementary or secondary | Pre-KG-5 | 53 | 6.8 | Presbyterian |
| South Bay Jr Academy Of Sda | 18.6 |
Regular elementary or secondary | Pre-KG-8 | 46 | 15.3 | Seventh-Day Adventist |
| Miss Sue's Nursery School And Kindergarten | 19.6 |
Early childhood program/child care center | Pre-KG-Trans. KG | 4 | 3.1 | Nonsectarian |
| Hanc-hebrew Academy Of Nassau County | 19.9 |
Regular elementary or secondary | Pre-KG-6 | 150 | 10.8 | Jewish |
| Hickory Hill | 20.1 |
Early childhood program/child care center | Pre-KG-KG | 18 | 18.0 | Nonsectarian |
| St Edward Confessor School | 20.1 |
Regular elementary or secondary | Pre-KG-8 | 198 | 13.8 | Roman Catholic |
| Greentrees Country Day School | 20.2 |
Early childhood program/child care center | Pre-KG-KG | 7 | 2.1 | Nonsectarian |
| Good Shepherd Lutheran School | 20.2 |
Early childhood program/child care center | Pre-KG-KG | 11 | 11.0 | Evangelical Lutheran Church in America |
| Our Lady Of Perpetual Help School | 20.4 |
Regular elementary or secondary | Pre-KG-8 | 291 | 12.9 | Roman Catholic |
| St Dominic Elementary School | 20.5 |
Regular elementary or secondary | Pre-KG-8 | 209 | 11.0 | Roman Catholic |
| Our Lady Queen Of Apostles Reg Catholic School | 20.5 |
Regular elementary or secondary | Pre-KG-8 | 205 | 13.1 | Roman Catholic |
| Montessori Children's School Of Plainview | 20.5 |
Montessori | Pre-KG-KG | 8 | 8.0 | Nonsectarian |
| St John Baptist De Lasalle Regional School | 20.6 |
Regular elementary or secondary | Pre-KG-8 | 255 | 17.5 | Roman Catholic |
| Msl-montessori School | 20.9 |
Montessori | Pre-KG-5 | 34 | 6.3 | Nonsectarian |
| Our Lady Of Mercy School | 21.4 |
Regular elementary or secondary | Pre-KG-8 | 438 | 16.3 | Roman Catholic |
| Our Lady Of Lourdes School | 21.7 |
Regular elementary or secondary | Pre-KG-8 | 171 | 13.4 | Roman Catholic |
| Solomon Schechter Day School Of Nassau County | 22.1 |
Regular elementary or secondary | KG-5 | 239 | 9.4 | Jewish |
| St Martin Of Tours School | 22.2 |
Regular elementary or secondary | Pre-KG-8 | 374 | 14.8 | Roman Catholic |
| St Ignatius Loyola School | 22.5 |
Regular elementary or secondary | Pre-KG-8 | 220 | 16.4 | Roman Catholic |
| Trinity Lutheran School | 22.8 |
Regular elementary or secondary | Pre-KG-8 | 381 | 15.3 | Lutheran Church - Missouri Synod |
| Holy Family School | 23.4 |
Regular elementary or secondary | Pre-KG-8 | 437 | 22.9 | Roman Catholic |
| Maria Regina Elementary School | 24.0 |
Regular elementary or secondary | Pre-KG-8 | 421 | 15.6 | Roman Catholic |
| St Isidore School | 24.3 |
Regular elementary or secondary | Pre-KG-8 | 242 | 17.2 | Roman Catholic |
| Grace Day School | 24.4 |
Regular elementary or secondary | Pre-KG-8 | 214 | 9.2 | Episcopal |
| The Maria Montessori School | 24.5 |
Montessori | Pre-KG-6 | 43 | 5.4 | Nonsectarian |
| Raynor Country Day School | 24.7 |
Regular elementary or secondary | Pre-KG-6 | 97 | 3.4 | Nonsectarian |
| Red Robin Country Day School | 24.8 |
Early childhood program/child care center | Pre-KG-KG | 45 | 15.0 | Nonsectarian |
| Montessori School Of East Meadow | 24.8 |
Early childhood program/child care center | Pre-KG-KG | 8 | 8.0 | Nonsectarian |
