| St. Elizabeth Ann Seton Regional School | Bellmore | PreK-8 | 226 | 14.6 | Roman Catholic |
| Kulanu Academy | Cedarhurst | Ungraded | 48 | 5.9 | Nonsectarian |
| Harmony Heights School | East Norwich | 8-12 | 55 | 4.6 | Nonsectarian, all-girls |
| My Spectrum School/Center | East Port Washington | PreK-Transitional 1st | 3 | not reported | Nonsectarian |
| Martin de Porres | Elmont | Ungraded | 213 | 10.1 | Nonsectarian |
| Mesivta Toras Moshe | Far Rockaway | 9-12 | 49 | 4.5 | Jewish, all-boys |
| Our Lady of Victory School | Floral Park | PreK-8 | 279 | 12.5 | Roman Catholic |
| De la Salle School | Freeport | 5-8 | 53 | 10.4 | Roman Catholic, all-boys |
| Freeport Christian Academy & Daycare | Freeport | PreK-12 | 180 | 10 | Christian (nondenominational) |
| Woodward Childrens Center | Freeport | 8-12 | 82 | 8.2 | Nonsectarian |
| St. Anne's School | Garden City | PreK-8 | 323 | 13.5 | Roman Catholic |
| The Waldorf School of Garden City | Garden City | PreK-12 | 238 | 6.2 | Nonsectarian |
| North Shore Day School | Glen Cove | PreK-K | 6 | 6 | Nonsectarian |
| Tiegerman Elementary School | Glen Cove | PreK-6 | 109 | 3.8 | Nonsectarian |
| Tiegerman Middle School | Glen Cove | 7-9 | 123 | 7.4 | Nonsectarian |
| Brookville Center for Childrens Services Edu #10 | Glen Head | PreK | 174 | 4.6 | Nonsectarian |
| Long Island Lutheran Middle & High School | Glen Head | 6-12 | 452 | 11.6 | Lutheran Church (Missouri Synod) |
| Bnot Yaakov | Great Neck | K-8 | 114 | 7.7 | Jewish, all-girls |
| Countryside Montessori School | Great Neck | PreK-K | 7 | not reported | Nonsectarian |
| Long Island Hebrew Academy | Great Neck | PreK-7 | 88 | 9.4 | Jewish |
| Magen Israel-Gan Israel Center | Great Neck | PreK-7 | 74 | 7.9 | Jewish |
| Mesivta of Great Neck | Great Neck | 9-11 | 26 | 3.3 | Jewish, all-boys |
| North Shore Hebrew Academy | Great Neck | PreK-12 | 1,116 | 6.4 | Jewish |
| Yeshivat Kol Yaakov | Great Neck | PreK-8 | 116 | 9 | Jewish, all-boys |
| Crescent School | Hempstead | K-12 | 270 | 11.3 | Nonsectarian |
| Sacred Heart Academy | Hempstead | 9-12 | 677 | 13.5 | Roman Catholic, all-girls |
| Stella K. Abraham H.S. for Girls | Hewlett | 9-12 | 354 | 9.8 | Jewish, all-girls |
| Yeshiva of South Shore | Hewlett | 2 | 1 | not reported | Jewish, all-boys |
| Obridge Academy | Hicksville | 3-12 | 501 | not reported | Nonsectarian |
| Trinity Lutheran School | Hicksville | K-8 | 112 | 11.2 | Lutheran Church (Missouri Synod) |
| Yeshiva Ketana of Long Island | Inwood | PreK-8 | 464 | 22.2 | Jewish, all-boys |
| Yeshiva Kol Torah-Five Towns-Far Roc | Inwood | 9-11 | 49 | 5.2 | Jewish, all-boys |
| Bais Yaakov of the Five Towns | Lawrence | PreK-1 | 33 | 13.2 | Jewish, all-girls |
| Haftr Middle School | Lawrence | 6-8 | 262 | 7.1 | Jewish |
| Hebrew Academy of Five Towns & Rockaway | Lawrence | PreK-12 | 1,119 | 5.7 | Jewish |
| Mesivta Ateres Yaakov | Lawrence | 9-12 | 194 | 8.6 | Jewish, all-boys |
| Rambam Mesivta Maimonides HS | Lawrence | 9-12 | 180 | 7.4 | Jewish, all-boys |
| The Brandeis School | Lawrence | K | 336 | 17.7 | Jewish |
| Yeshivath Gesher | Lawrence | PreK-2 | 70 | 8.6 | Jewish |
| The Elija School | Levittown | Ungraded | 24 | not reported | Nonsectarian |
| Portledge School | Locust Valley | PreK-12 | 518 | 7.7 | Nonsectarian |
| Harriet Eisman Community School | Long Beach | 9-12 | 65 | 16.7 | Nonsectarian |
| Long Beach Catholic Regional School | Long Beach | PreK-8 | 245 | 15.2 | Roman Catholic |
| Torah High School Long Beach | Long Beach | 9-12 | 181 | 36.2 | Jewish, all-boys |
| Our Lady of Lourdes School | Malverne | PreK-8 | 226 | 12.2 | Roman Catholic |
| Our Lady of Grace Montessori School | Manhasset | PreK-3 | 40 | 11.8 | Roman Catholic |
| St. Marys High School | Manhasset | 9-12 | 329 | 13.4 | Roman Catholic |
| St. Rose of Lima Elementary School | Massapequa | PreK-8 | 250 | 10.3 | Roman Catholic |
| Grace Christian Academy | Merrick | K-12 | 143 | 6.9 | Baptist |
| Progressive School of Long Island | Merrick | K-8 | 63 | 4.4 | Nonsectarian |
| Mill Neck Manor School for the Deaf | Mill Neck | PreK-12 | 79 | 4.4 | Nonsectarian |
| Notre Dame School | New Hyde Park | PreK-8 | 267 | 11.9 | Roman Catholic |
| The Greenvale School | Old Brookville | PreK-8 | 355 | 5.6 | Nonsectarian |
| East Woods School | Oyster Bay | PreK-8 | 133 | 3.2 | Nonsectarian |
| St. Dominic Elementary School | Oyster Bay | PreK-8 | 160 | 12.7 | Roman Catholic |
| St. Dominic High School | Oyster Bay | 9-12 | 280 | 11 | Roman Catholic |
| Mercaz Academy | Plainview | PreK-6 | 120 | 6.6 | Jewish |
| Plainview Jewish Center | Plainview | K-7 | 31 | 15.5 | Jewish |
| Happy Montessori School | Port Washington | PreK-Transitional K | 8 | 4 | Nonsectarian |
| Vincent Smith School | Port Washington | 2-12 | 56 | 2.6 | Nonsectarian |
| Rosa Lee Young Childhood Center | Rockville Centre | PreK | 13 | 13 | Nonsectarian |
| Community Academic Prep | Roosevelt | 11 | 3 | 3 | Nonsectarian |
| The Children's Learning Center | Roosevelt | PreK | 137 | 10.2 | Nonsectarian |
| Sco Family Services - Tyree Learning Center | Sea Cliff | Ungraded | 45 | 4.2 | Nonsectarian |
| St. William the Abbot School | Seaford | PreK-8 | 372 | 13.3 | Roman Catholic |
| The Hagedorn Little Village School | Seaford | Ungraded | 307 | not reported | Nonsectarian |
| Our Lady of Mercy Academy | Syosset | 9-12 | 195 | 7.1 | Roman Catholic, all-girls |
| St. Edward Confessor School | Syosset | PreK-8 | 150 | 7.9 | Roman Catholic |
| Variety Child Learning Center | Syosset | PreK | 38 | 7.6 | Nonsectarian |
| Hanc - Middle & High School | Uniondale | 7-12 | 422 | 7.8 | Jewish |
| Kellenberg Memorial High School | Uniondale | 6-12 | 2,692 | 21.8 | Roman Catholic |
| St. Martin de Porres Marianist School | Uniondale | PreK-8 | 298 | 11.5 | Roman Catholic |
| Cheder at the Ohel | Valley Stream | K-8 | 55 | 6.6 | Jewish, all-boys |
| Hamza Academy | Valley Stream | PreK-7 | 147 | 7.2 | Islamic |
| Ivdu Long Island | Valley Stream | Ungraded | 22 | not reported | Jewish |
| Long Island Montessori School | Westbury | PreK-K | 3 | not reported | Nonsectarian |
| St. Brigid/Our Lady of Hope Regional School | Westbury | PreK-8 | 182 | 10.2 | Roman Catholic |
| Westbury Friends School | Westbury | PreK-2 | 19 | 2.2 | Nonsectarian |
| Schechter School of Long Island | Williston Park | K-12 | 231 | 4.4 | Jewish |
| St. Aidan Upper School | Williston Park | 3-8 | 166 | 5.9 | Roman Catholic |
| Fusion Academy Woodbury NY | Woodbury | 6-12 | 65 | not reported | Nonsectarian |
| The Center for Developmental Disabilities | Woodbury | Ungraded | 100 | 5.9 | Nonsectarian |
| Davis Renov Stahler Yeshiva High School -Boys | Woodmere | 9-12 | 387 | 7.1 | Jewish, all-boys |
| Hebrew Academy for Special Children | Woodmere | PreK | 13 | 3 | Nonsectarian |
| Mesivta Netzach Hatorah | Woodmere | 9-12 | 87 | 9.3 | Jewish, all-boys |