| Abraham Joshua Heschel School
| New York | NY | PK-12th | none | Coed | 716 | Jewish |
| Academy of Saint Elizabeth
| Convent Station | NJ | 9th-12th | none | Girls only | 242 | Roman Catholic |
| Academy of the Holy Angels
| Demarest | NJ | 9th-12th | none | Girls only | 540 | Roman Catholic |
| All Hallows High School
| New York | NY | 9th-12th | none | Boys only | 635 | Roman Catholic |
| Benedictine Academy
| Elizabeth | NJ | 9th-12th | none | Girls only | 190 | Roman Catholic |
| Berkeley Carroll School
4/5
based on 1 student review(s) | Brooklyn | NY | PK-12th | none | Coed | 800 | None |
| Birch Wathen Lenox School
| New York | NY | K-12th | none | Coed | 550 | None |
| Bishop Loughlin Memorial High School
| Brooklyn | NY | 9th-12th | none | Coed | 880 | Roman Catholic |
| Blair Academy
4.8/5
based on 3 student review(s) | Blairstown | NJ | 9th-12th | 9th-PG | Coed | 442 | Presbyterian |
| Brearley School
4.4/5
based on 1 student review(s) | New York | NY | K-12th | none | Girls only | 692 | Non-Denominational Christian |
| Brooklyn Friends School
| Brooklyn | NY | PK-12th | none | Coed | 700 | Quakers/Friends |
| Calhoun School
| New York | NY | PK-12th | none | Coed | 742 | None |
| Chapin School
| New York | NY | K-12th | none | Girls only | 728 | None |
| Collegiate School
| New York | NY | K-12th | none | Boys only | 630 | None |
| Convent of the Sacred Heart
3.8/5
based on 1 student review(s) | New York | NY | PK-12th | none | Girls only | 670 | Roman Catholic |
| Dalton School
4.6/5
based on 8 student review(s) | New York | NY | K-12th | none | Coed | 1280 | None |
| Delbarton School
4.8/5
based on 2 student review(s) | Morristown | NJ | 7th-12th | none | Coed | 550 | Roman Catholic |
| Dominican Academy
| New York | NY | 9th-12th | none | Coed | 248 | Roman Catholic |
| Dwight-Englewood School
| Englewood | NJ | PK-12th | none | Coed | 1007 | None |
| Friends Seminary
| New York | NY | K-12th | none | Coed | 670 | Quakers/Friends |
| Gill St. Bernard's School
| Gladstone | NJ | PK-12th | none | Coed | 676 | None |
| Golda Och Academy
| West Orange | NH | PK-12th | none | Coed | 800 | Jewish |
| Hewitt School
| New York | NY | K-12th | none | Girls only | 506 | None |
| Hudson School
| Hoboken | NJ | 5th-12th | none | Coed | 204 | None |
| Kent Place School
| Summit | NJ | PK-12th | none | Girls only | 655 | None |
| Little Red School House and Elisabeth Irwin High School
| New York | NY | PK-12th | none | Coed | 560 | None |
| Loyola School
| New York | NY | 9th-12th | none | Coed | 205 | Roman Catholic |
| Marymount School of NY
| New York | NY | PK-12th | none | Girls only | 565 | Roman Catholic |
| Montclair Kimberley Academy
| Montclair | NJ | PK-12th | none | Coed | 1046 | None |
| Newark Academy
4.6/5
based on 2 student review(s) | Linvingston | NJ | 6th-12th | none | Coed | 555 | None |
| Nightingale-Bamford School
| New York | NY | PK-12th | none | Girls only | 550 | None |
| Notre Dame Academy
| Staten Island | NY | PK-12th | none | Girls only | 380 | Roman Catholic |
| Oak Knoll School of the Holy Child
| Summit | NJ | K-12th | none | Girls only | 550 | Roman Catholic |
| Packer Collegiate Institute
| Brooklyn | NY | PK-12th | none | Coed | 940 | None |
| Pingry School
3.8/5
based on 1 student review(s) | Basking Ridge | NJ | K-12th | none | Coed | 1020 | None |
| Poly Prep Country Day School
| Brooklyn | NY | PK-12th | none | Coed | 1080 | None |
| Professional Children's School
| New York | NY | 6th-12th | none | Coed | 205 | None |
| Regis High School
4.5/5
based on 4 student review(s) | New York | NY | 9th-12th | none | Boys only | 535 | Roman Catholic (Jesuit) |
| Rudolf Steiner School
| New York | NY | PK-12th | none | Coed | 336 | None |
| Saddle River Day School
| Saddle River | NJ | K-12th | none | Coed | 317 | None |
| Saint Agnes Boys High School
| New York | NY | 9th-12th | none | Boys only | 300 | Roman Catholic |
| Saint Ann's School
| Brooklyn | NY | PK-12th | none | Coed | 1083 | None |
| Spence School
5/5
based on 1 student review(s) | New York | NY | K-12th | none | Girls only | 658 | None |
| St. Dominic Academy
| Jersey City | NJ | 9th-12th | none | Girls only | 485 | Roman Catholic |
| St. Joseph High School
| Metuchen | NJ | 9th-12th | none | Boys only | 823 | Roman Catholic |
| Saint Peter's Preparatory School
| Jersey City | NJ | 9th-12th | none | Boys only | 915 | Roman Catholic (Jesuit) |
| St. Vincent Ferrer High School
| New York | NY | 9th-12th | none | Girls only | 500 | Roman Catholic |
| Staten Island Academy
| Staten Island | NY | PK-12th | none | Coed | 400 | None |
| Trevor Day School
| New York | NY | PK-12th | none | Coed | 790 | None |
| Trinity School
4.5/5
based on 4 student review(s) | New York | NY | K-12th | none | Coed | 960 | Episcopal |
| United Nations International School
5/5
based on 1 student review(s) | New York | NY | K-12th | none | Coed | 1550 | None |
| Villa Walsh Academy
| Morristown | NJ | 7th-12th | none | Coed | 250 | Roman Catholic |
| Wardlaw-Hartridge School
| Edison | NJ | PK-12th | none | Coed | 446 | None |
| Xavier High School
| New York | NY | 9th-12th | none | Boys only | 938 | Roman Catholic |