| Lord Stirling School | 2.8 |
Special education | Ungraded-Ungraded | 44 | 4.9 | Nonsectarian |
| The Pingry School | 3.2 |
Regular elementary or secondary | KG-12 | 1053 | 6.8 | Nonsectarian |
| Somerset Hills School | 3.9 |
Special education | Ungraded-Ungraded | 110 | 4.2 | Nonsectarian |
| Somerset Hills Learning Institute | 4.7 |
Special education | Ungraded-Ungraded | 21 | 2.3 | Nonsectarian |
| Matheny School | 5.4 |
Special education | Pre-KG-12 | 59 | 5.1 | Nonsectarian |
| Montgomery Academy | 6.8 |
Special education | 3-12 | 92 | 6.1 | Nonsectarian |
| Gill St Bernard S School | 7.6 |
Regular elementary or secondary | Pre-KG-12 | 652 | 8.4 | Nonsectarian |
| Mcauley School | 8.0 |
Special education | Ungraded-Ungraded | 44 | 5.5 | Nonsectarian |
| New Life Christian School | 8.0 |
Regular elementary or secondary | Pre-KG-9 | 43 | 14.3 | Christian (no specific denomination) |
| Jerry Davis Early Childhood Center | 8.4 |
Special education | Pre-KG-Pre-KG | 8 | 8.0 | Nonsectarian |
| The Midland School | 8.4 |
Special education | Ungraded-Ungraded | 244 | 6.4 | Nonsectarian |
| Somerset Bible Baptist Christian Academy | 9.4 |
Regular elementary or secondary | KG-12 | 45 | 9.0 | Christian (no specific denomination) |
| Children's Specialized Hospital/school Program | 9.6 |
Special education | Ungraded-Ungraded | 32 | 6.4 | Nonsectarian |
| Rutgers Preparatory School | 10.0 |
Regular elementary or secondary | Pre-KG-12 | 687 | 6.7 | Nonsectarian |
| Wardlaw-hartridge School | 10.5 |
Regular elementary or secondary | Pre-KG-12 | 402 | 7.2 | Nonsectarian |
| Cheder Lubavitch | 10.7 |
Regular elementary or secondary | Pre-KG-9 | 146 | 6.0 | Jewish |
| Eclc Of New Jersey | 10.7 |
Special education | Ungraded-Ungraded | 235 | 7.5 | Nonsectarian |
| Oak Knoll School Of The Holy Child | 10.8 |
Regular elementary or secondary | KG-12 | 553 | 8.2 | Roman Catholic |
| An-noor Academy | 11.4 |
Regular elementary or secondary | KG-12 | 289 | 8.3 | Islamic |
| An Noor Academy | 11.4 |
Regular elementary or secondary | Pre-KG-12 | 289 | 9.6 | Islamic |
| Timothy Christian School | 11.7 |
Regular elementary or secondary | KG-12 | 605 | 12.8 | Baptist |
| Allegro School Inc | 12.4 |
Special education | Pre-KG-Pre-KG | 84 | 4.5 | Nonsectarian |
| Pg Chambers School | 12.7 |
Special education | Pre-KG-Pre-KG | 86 | 6.1 | Nonsectarian |
| Center School | 13.0 |
Regular elementary or secondary | 1-12 | 135 | 5.9 | Nonsectarian |
| Newark Academy | 13.2 |
Regular elementary or secondary | 6-12 | 555 | 7.9 | Nonsectarian |
| Joseph Kushner Hebrew Academy | 13.3 |
Special program emphasis | Pre-KG-12 | 708 | 8.3 | Jewish |
| Crestview Educational Trust | 13.3 |
Regular elementary or secondary | 6-12 | 36 | 6.7 | Brethren |
| The Winston School | 13.3 |
Special education | Ungraded-Ungraded | 61 | 3.9 | Nonsectarian |
| Netivot Motessori Mesorah | 13.6 |
Montessori | Ungraded-Ungraded | 65 | 21.7 | Jewish |
| Calais School | 13.9 |
Special education | KG-12 | 136 | 4.6 | Nonsectarian |
| Lakeview School | 14.0 |
Special education | Pre-KG-Pre-KG | 157 | 6.5 | Nonsectarian |
| Jardine Academy-cranford | 14.4 |
Special education | Ungraded-Ungraded | 47 | 7.8 | Nonsectarian |
| American Christian School | 14.4 |
Regular elementary or secondary | Pre-KG-9 | 120 | 10.2 | Christian (no specific denomination) |
| Horizon School | 14.7 |
Special education | Ungraded-Ungraded | 78 | 7.1 | Nonsectarian |
| Rabbi Barry H Greene Ecc At Temple Brai Jeshurun | 14.7 |
Early childhood program/child care center | Pre-KG-Pre-KG | 6 | 1.5 | Jewish |
| Parsippany Christian School | 14.8 |
Regular elementary or secondary | Pre-KG-12 | 214 | 12.2 | Baptist |
| Deron School 1 | 15.2 |
Special education | Ungraded-Ungraded | 132 | 6.2 | Nonsectarian |
| The Jardine Academy | 16.5 |
Special education | Ungraded-Ungraded | 47 | 7.8 | Nonsectarian |
| The Craig School | 17.0 |
Special education | 2-12 | 169 | 4.4 | Nonsectarian |
| Darul Arqam School | 17.4 |
Special program emphasis | Pre-KG-11 | 231 | 8.1 | Islamic |
| Trinity Christian Academy | 17.5 |
Regular elementary or secondary | Pre-KG-12 | 124 | 9.7 | Assembly of God |
| Rock Brook School Inc | 17.7 |
Special education | Ungraded-Ungraded | 50 | 4.3 | Nonsectarian |
| Victory Christian Academy | 17.9 |
Regular elementary or secondary | Pre-KG-12 | 73 | 7.3 | Christian (no specific denomination) |
| Center For Educ Advancement-spring Run School | 17.9 |
Special education | Ungraded-Ungraded | 32 | 8.9 | Nonsectarian |
| Al-muslimaat Academy | 18.3 |
Regular elementary or secondary | 6-12 | 27 | 5.4 | Islamic |
| The Trinity Christian School O | 18.7 |
Regular elementary or secondary | KG-12 | 171 | 8.8 | Baptist |
| Gateway School | 18.8 |
Special education | 1-12 | 105 | 7.0 | Nonsectarian |
| Dr Thomas Christian Academy | 18.8 |
Regular elementary or secondary | Pre-KG-12 | 97 | 9.3 | Christian (no specific denomination) |
| Noor-ul-iman School | 18.9 |
Regular elementary or secondary | Pre-KG-12 | 399 | 9.8 | Islamic |
| The Lakeside School | 19.2 |
Special education | Ungraded-Ungraded | 25 | 12.5 | Nonsectarian |
| Jamas Children's University | 19.5 |
Special program emphasis | Pre-KG-11 | 112 | 12.0 | Nonsectarian |
| Ycs-virginia Harkness Sawtelle Learning Center | 20.0 |
Special education | Pre-KG-Pre-KG | 87 | 4.8 | Nonsectarian |
| Clara Muhammad School | 20.0 |
Regular elementary or secondary | 1-9 | 9 | 2.2 | Islamic |
| Madrasatu Ahlis Sunnah | 20.1 |
Regular elementary or secondary | Pre-KG-12 | 183 | 9.9 | Islamic |
| The Children's Institute | 20.9 |
Special education | Ungraded-Ungraded | 164 | 7.0 | Nonsectarian |
| Mount Carmel Guild School And Preschool | 21.2 |
Special education | Pre-KG-Pre-KG | 26 | 4.3 | Roman Catholic |
| The Montclair Kimberley Academy | 21.4 |
Regular elementary or secondary | Pre-KG-12 | 1010 | 8.2 | Nonsectarian |
| The Montclair Kimberley Academy | 21.4 |
Regular elementary or secondary | Pre-KG-12 | 1009 | 8.2 | Nonsectarian |
| Child Development Center | 21.4 |
Special education | Ungraded-Ungraded | 100 | 4.0 | Nonsectarian |
| Deron School Ii | 21.5 |
Special education | Ungraded-Ungraded | 150 | 3.0 | Nonsectarian |
| Princeton Day School | 21.7 |
Regular elementary or secondary | Pre-KG-12 | 888 | 7.9 | Nonsectarian |
| Washington Academy | 21.8 |
Special education | KG-12 | 172 | 2.6 | Nonsectarian |
| 1st Cerebral Palsy Of Nj | 22.0 |
Special education | Pre-KG-12 | 127 | 9.1 | Nonsectarian |
| Bethel Christian Academy | 22.1 |
Regular elementary or secondary | KG-12 | 159 | 12.2 | Assembly of God |
| Alpha And Omega | 22.2 |
Regular elementary or secondary | Pre-KG-12 | 37 | 7.4 | Pentecostal |
| Chapel Hill Academy | 22.5 |
Special education | KG-9 | 100 | 7.7 | Nonsectarian |
| Lacordaire Academy Secondary | 22.7 |
Regular elementary or secondary | Pre-KG-12 | 196 | 7.0 | Roman Catholic |
| Eden Institute | 22.8 |
Special education | Pre-KG-Pre-KG | 46 | 4.6 | Nonsectarian |
| The Little Neighborhood Lc | 22.9 |
Early childhood program/child care center | Pre-KG-Pre-KG | 2 | 2.0 | Nonsectarian |
| The Hun School Of Princeton | 23.2 |
Regular elementary or secondary | 6-12 | 579 | 8.2 | Nonsectarian |
| Tranquility Adventist School | 23.3 |
Regular elementary or secondary | Pre-KG-10 | 42 | 8.4 | Seventh-Day Adventist |
| Montessori Country Day School | 23.5 |
Montessori | Ungraded-Ungraded | 100 | 10.0 | Nonsectarian |
| The Phoenix Center Inc | 24.1 |
Special education | Ungraded-Ungraded | 141 | 7.4 | Nonsectarian |
| Princeton Child Development Institute | 24.5 |
Special education | Ungraded-Ungraded | 29 | 3.6 | Nonsectarian |
| Abundant Life Academy | 24.6 |
Regular elementary or secondary | Pre-KG-12 | 300 | 12.3 | Pentecostal |
