Private School Review - Established 2003
Adelphi Academy of Brooklyn Photo - Adelphi Academy of Brooklyn's historic Bay Ridge campus is located at 8515 Ridge Boulevard, in the heart of Bay Ridge, Brooklyn. .
Adelphi Academy of Brooklyn

Best New York Private Schools Belonging to National Association of Independent Schools (NAIS) (2025-26)

For the 2025-26 school year, there are 155 private schools belonging to National Association of Independent Schools (NAIS) serving 64,573 students in New York. You can also find more schools membership associations in New York.
The top ranked private schools belonging to National Association of Independent Schools (NAIS) in New York include Friends Academy, BASIS Independent Brooklyn, and BASIS Independent Manhattan.
The average tuition cost is $44,819, which is higher than the New York private school average tuition cost of $22,412.
27% of private schools belonging to National Association of Independent Schools (NAIS) in New York are religiously affiliated (most commonly Catholic and Episcopal).

Top Ranked Private Schools Belonging to National Association of Independent Schools (NAIS) in New York (2025-26)

School
Location
Quick Facts
Adelphi Academy of Brooklyn
Adelphi Academy of Brooklyn Photo - Adelphi Academy of Brooklyn's historic Bay Ridge campus is located at 8515 Ridge Boulevard, in the heart of Bay Ridge, Brooklyn. .
(8)
8515 Ridge Boulevard
Brooklyn, NY 11209
(718) 238-3308
Gr: NS-12 | 235 students Avg. class size: 12 students Sports: 15 | Extracurrculars: 20 Tuition & acceptance rate listed
BASIS Independent Brooklyn
BASIS Independent Brooklyn Photo
556 Columbia Street
Brooklyn, NY 11231
(929) 626-5001
Gr: PK-12 | 676 students Avg. class size: 14 students Sports: 18 | Extracurrculars: 28 Tuition listed
BASIS Independent Manhattan
BASIS Independent Manhattan Photo - Early Learning Program
795 Columbus Avenue
New York, NY 10025
(929) 930-4798
Gr: PK-12 | 285 students Avg. class size: 15 students Sports: 10 | Extracurrculars: 17 Tuition listed
Bay Ridge Preparatory School
Bay Ridge Preparatory School Photo - With a fresh approach to education, Bay Ridge Prep gives students an enriching experience that lasts a lifetime. Curiosity is stimulated, confidence is built, character is strengthened and socially-responsible citizens are graduated and prepared to be leaders of a global society.
(5)
8101 Ridge Boulevard
Brooklyn, NY 11209
(718) 833-9090
Gr: K-12 | 367 students Avg. class size: 15 students Sports: 12 | Extracurrculars: 28 Tuition listed
Birch Wathen Lenox School
Birch Wathen Lenox School Photo
(10)
210 E 77th Street
New York, NY 10075
(212) 861-0404
Gr: K-12 Avg. class size: 15 students Sports: 11 | Extracurrculars: 16 Tuition listed
Buckley Country Day School
Buckley Country Day School Photo - Buckley Country Day School is a private, mission-driven, independent co-educational day school, serving 323 children in grades toddler through eight. The school provides a superior elementary education to an intellectually capable and diverse student body in a dynamic learning community.
2 I U Willets Road
Roslyn, NY 11576
(516) 472-2723
Gr: PK-8 | 363 students Avg. class size: 15 students Sports: 9 | Extracurrculars: 6 Tuition listed
Buffalo Seminary
Buffalo Seminary Photo - Founded in 1851, and in this building since 1909, Buffalo Seminary is on the National Register of Historic Places. Our campus includes 5 faculty and student residences in adjacent restored historic homes, and Larkin Field, a 5-minute walk away on a leafy parkway.
All-girls
(12)
205 Bidwell Parkway
Buffalo, NY 14222
(716) 885-6780
Gr: 9-12 | 160 students Avg. class size: 10 students Sports: 16 | Extracurrculars: 34 Tuition & acceptance rate listed
The Cathedral School Of St. John The Divine
The Cathedral School Of St. John The Divine Photo
(Episcopal)
(9)
1047 Amsterdam Ave
New York, NY 10025
(212) 316-7500
Gr: K-8 | 248 students Sports: 8 Tuition listed
The Chapel School
The Chapel School Photo - The Chapel School's small class sizes ... max 14 in preschool, 18 in K-5 and 16 in middle school ... provide opportunities for personal, individualized instruction and a strong sense of community!
(Lutheran Church Missouri Synod)
(3)
172 White Plains Road
Bronxville, NY 10708
(914) 337-3202
Gr: NS-8 | 229 students Avg. class size: 12 students Sports: 7 | Extracurrculars: 11 Tuition & acceptance rate listed
Columbia Grammar & Preparatory School
Columbia Grammar & Preparatory School Photo
(3)
5 W 93rd St
New York, NY 10025
(212) 749-6200
Gr: PK-12 | 1,163 student Avg. class size: 14 students Sports: 14 | Extracurrculars: 74 Tuition listed
Friends Academy
Friends Academy Photo - Middle School Science
(Friends)
(11)
270 Duck Pond Road
Locust Valley, NY 11560
(516) 676-0393
Gr: NS-12 | 769 students Avg. class size: 12 students Sports: 18 | Extracurrculars: 46 Tuition & acceptance rate listed
George Jackson Academy
George Jackson Academy Photo - At George Jackson Academy, smart is cool, learning is fun, and boys embrace their uniqueness within a brotherhood that supports them every step of the way of middle school and beyond.
All-boys
(22)
104 Saint Marks Place
New York, NY 10009
(212) 228-6789
Gr: 6-8 | 83 students Avg. class size: 15 students Extracurrculars: 12 Tuition & acceptance rate listed
Grace Church School
Grace Church School Photo
(Episcopal)
(5)
86 4th Ave
New York, NY 10003
(212) 475-5609
Gr: PK-12 | 850 students Avg. class size: 18 students Sports: 14 Tuition listed
The Knox School
The Knox School Photo - Founded in 1904, The Knox School is Long Island`s oldest established private school. Our inclusive environment serves grades 6-12 and Post-Graduate, providing students with a broad world perspective and a wide range of skills to prepare them for the next phase of their journeys.
(9)
541 Long Beach Road
Saint James, NY 11780
(631) 686-1600
Gr: 6-12 | 132 students Avg. class size: 12 students Sports: 9 | Extracurrculars: 31 Tuition & acceptance rate listed
Loyola School
Loyola School Photo
(Catholic)
980 Park Avenue
New York, NY 10028
(212) 288-3522
Gr: 9-12 | 204 students Avg. class size: 13 students Sports: 9 | Extracurrculars: 31 Tuition listed
Lycee Francais de New York
Lycee Francais de New York Photo
(1)
505 East 75th Street
New York, NY 10021
(212) 369-1400
Gr: NS-12 | 1,233 student Avg. class size: 18 students Sports: 9 | Extracurrculars: 33 Tuition listed
Manlius Pebble Hill School
Manlius Pebble Hill School Photo - The opening day Handshake Ceremony is a tradition that dates back generations, with the entire student body along with faculty and staff to welcome each other into a new academic year. Handshakes, hugs, high fives, fist bumps, waves, and rock-paper-scissors are all forms of greetings.
(1)
5300 Jamesville Rd
Syracuse, NY 13214
(315) 446-2452
Gr: PK-12 | 332 students Avg. class size: 13 students Sports: 9 Tuition listed
Pine Street School
Pine Street School Photo
Special Program Emphasis
(11)
25 Pine Street
New York, NY 10005
(347) 237-7606
Gr: NS-8 | 360 students Avg. class size: 18 students Sports: 6 | Extracurrculars: 17 Tuition listed
Professional Children's School
Professional Children's School Photo - Students collaborating in the PCS library.
(4)
132 W 60th St
New York, NY 10023
(212) 582-3116
Gr: 4-12 | 137 students Avg. class size: 12 students Extracurrculars: 19 Tuition & acceptance rate listed
Rodeph Sholom School
Rodeph Sholom School Photo - Rodeph Sholom School has three distinct divisions: Early Childhood, Elementary, and Middle School, allowing dedicated focus on each developmental phase.
(Jewish)
(9)
10 West 84th Street & 168 West 79th Street
New York, NY 10024
(646) 438-8600
Gr: NS-8 | 427 students Sports: 8 | Extracurrculars: 7 Tuition & acceptance rate listed
THINK Global School
THINK Global School Photo - THINK Global School is comprised of 41 high school students who hail from all over the world. It's an opportunity to live next to and learn from a truly global student body.
960 Madison Avenue Fifth Floor
New York, NY 10021
(646) 808-0675
Gr: 11-12 | 36 students Avg. class size: 10 students Tuition & acceptance rate listed
Vincent Smith School
Vincent Smith School Photo - Upper School entrance
Special Education School
(3)
322 Port Washington Blvd
Port Washington, NY 11050
(516) 365-4900
Gr: 1-12 | 54 students Avg. class size: 6 students Extracurrculars: 10 Tuition & acceptance rate listed
The Waldorf School Of Garden City
The Waldorf School Of Garden City Photo - Welcome to the Waldorf School of Garden City!
Special Program Emphasis
(9)
225 Cambridge Avenue
Garden City, NY 11530
(516) 742-3434
Gr: NS-12 | 300 students Avg. class size: 18 students Sports: 11 | Extracurrculars: 13 Tuition listed
The Windsor School
The Windsor School Photo - Each year, our graduation ceremony takes places at Queens Botanical Garden. We are proud of our 100% graduation rate each year dating back to 1969, our first graduating class. Our graduates gain acceptance to top colleges and universities with substantial scholarship offers.
(10)
37-02 Main Street
Flushing, NY 11354
(718) 359-8300
Gr: 7-12 | 125 students Avg. class size: 15 students Sports: 6 | Extracurrculars: 8 Tuition & acceptance rate listed
ACADEMICS WEST
ACADEMICS WEST Photo
Special Education School
(12)
37 west 65th street, Floor 5
New York, NY 10023
(212) 580-0080
Gr: K-12 | 80 students Avg. class size: 5 students Sports: 2 | Extracurrculars: 7 Tuition & acceptance rate listed
Bovina Center Montessori School
Bovina Center Montessori School Photo
Montessori School
2121 County Rd 5
Bovina Center, NY 13740
(607) 832-4956
Gr: NS-12 | 70 students Avg. class size: 20 students Sports: 6 | Extracurrculars: 7 Tuition & acceptance rate listed
Bridges Academy (The)
Bridges Academy (The) Photo - Our 2016-17 Graduating class
(19)
339 Snedecor Ave
West Islip, NY 11795
(631) 358-5035
Gr: NS-8 | 250 students Sports: 4 | Extracurrculars: 27 Tuition listed
Garden School
Garden School Photo - Our goal from the earliest grades through high school is to develop lifelong learners who excel in academics and individuals who enhance Garden School and the college they later attend. All students have their own strengths, weaknesses, talents, and dreams. The college search seeks to find the best match for our graduates, places where they can thrive and learn.
(40)
3316 79th St
Jackson Heights, NY 11372
(718) 335-6363
Gr: NS-12 | 259 students Avg. class size: 15 students Sports: 8 | Extracurrculars: 25 Tuition listed
The IDEAL School of Manhattan
The IDEAL School of Manhattan Photo - Students show the kindness snowflakes that they made.
Special Program Emphasis
(5)
5 Hanover Square
New York, NY 10004
(212) 769-1699
Gr: K-12 | 172 students Avg. class size: 14 students Sports: 5 | Extracurrculars: 10 Tuition & acceptance rate listed
Ivy League School
Ivy League School Photo
(4)
211 Brooksite Drive
Smithtown, NY 11787
(631) 265-4177
Gr: PK-8 | 324 students Avg. class size: 12 students Sports: 9 | Extracurrculars: 6 Tuition & acceptance rate listed
The Kew-Forest School
The Kew-Forest School Photo - At The Kew-Forest School, you will find a community that nurtures lifelong learners, educators who inspire young people, and students who support each other. Established in 1918, Kew-Forest is the oldest independent co-ed, college preparatory school in Queens for students in Preschool through Grade 12. For more info, visit kewforest.org.
119-17 Union Tpke
Forest Hills, NY 11375
(718) 268-4667
Gr: NS-12 | 207 students Avg. class size: 12 students Sports: 12 | Extracurrculars: 23 Tuition listed
Mizzentop Day School
Mizzentop Day School Photo
64 E Main St
Pawling, NY 12564
(845) 855-7338
Gr: PK-8 | 158 students Avg. class size: 10 students Sports: 6 | Extracurrculars: 12 Tuition listed
Abraham Joshua Heschel School
(Jewish)
20 W End Ave
New York, NY 10023
(212) 246-7717
Gr: PK-12 | 967 students Avg. class size: 15 students Tuition & acceptance rate listed
Albany Academies
135-140 Academy Road
Albany, NY 12208
(518) 429-2300
Gr: PK-12 | 680 students Avg. class size: 16 students Sports: 18 Tuition listed
Allen-Stevenson School
Allen-Stevenson School Photo
All-boys
132 E 78th St
New York, NY 10075
(212) 288-6710
Gr: K-8 | 386 students Avg. class size: 15 students Sports: 8 | Extracurrculars: 13 Tuition listed
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