For the 2025-26 school year, there are 82 private schools serving 16,089 students in Suffolk County, NY (there are 341 public schools, serving 222,331 public students). 7% of all K-12 students in Suffolk County, NY are educated in private schools (compared to the NY state average of 15%).
The top ranked private schools in Suffolk County, NY include The Stony Brook School, The Knox School, and St. John The Baptist Diocesan High School.
The average tuition cost is $20,283, which is lower than the New York private school average tuition cost of $22,420.
Top Ranked Suffolk County Private Schools (2025-26)
School
Location
Quick Facts
500 Montauk Highway
East Islip, NY 11769
(631) 869-1572
East Islip, NY 11769
(631) 869-1572
Gr: 6-12 Avg. class size: 8 students Sports: 11 Tuition & acceptance rate listed
541 Long Beach Road
Saint James, NY 11780
(631) 686-1600
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
201 Old Town Rd
East Setauket, NY 11733
(631) 751-1154
East Setauket, NY 11733
(631) 751-1154
Gr: PK-8 | 423 students Avg. class size: 12 students Sports: 7 | Extracurrculars: 9 Tuition & acceptance rate listed
1 Higbie Dr
Smithtown, NY 11787
(631) 265-3334
Smithtown, NY 11787
(631) 265-3334
Gr: PK-12 | 353 students Avg. class size: 18 students Sports: 6 | Extracurrculars: 16 Tuition & acceptance rate listed
135 Saint Andrews Rd
Southampton, NY 11968
(631) 283-2223
Southampton, NY 11968
(631) 283-2223
Gr: NS-6 | 67 students Avg. class size: 16 students Sports: 3 | Extracurrculars: 7 Tuition listed
339 Snedecor Ave
West Islip, NY 11795
(631) 358-5035
West Islip, NY 11795
(631) 358-5035
Gr: NS-8 | 238 students Sports: 4 | Extracurrculars: 26 Tuition listed
211 Brooksite Drive
Smithtown, NY 11787
(631) 265-4177
Smithtown, NY 11787
(631) 265-4177
Gr: PK-8 | 324 students Avg. class size: 12 students Sports: 9 | Extracurrculars: 6 Tuition & acceptance rate listed
B.e.s.t. Learning Center
Daycare / Preschool
525 Veterans Memorial Highway
Smithtown, NY 11787
(631) 864-4064
Smithtown, NY 11787
(631) 864-4064
Gr: NS-PK | 159 students Avg. class size: 15 students Tuition & acceptance rate listed
Crestwood Country Day School
Daycare / Preschool
313 Round Swamp Rd
Melville, NY 11747
(631) 692-6361
Melville, NY 11747
(631) 692-6361
Gr: PK-12 | 346 students Tuition & acceptance rate listed
Developmental Disabilities Institute
Special Education School
99 Hollywood Dr
Smithtown, NY 11787
(631) 366-2916
Smithtown, NY 11787
(631) 366-2916
Gr: PK | 1,379 student Tuition & acceptance rate listed
151 Mitchell Lane
Bridgehampton, NY 11932
(631) 537-7068
Bridgehampton, NY 11932
(631) 537-7068
Gr: PK-8 | 75 students Avg. class size: 13 students Tuition listed
Holy Angels Regional School![Holy Angels Regional School Photo - Holy Angels Regional is a Pre-K through 8th grade Catholic School located on the South Shore of Long Island in the vibrant Village of Patchogue. Our Catholic Faith is at the heart of everything we do!]( "Holy Angels Regional School Photo - Holy Angels Regional is a Pre-K through 8th grade Catholic School located on the South Shore of Long Island in the vibrant Village of Patchogue. Our Catholic Faith is at the heart of everything we do!")
(Catholic)
1 Division St
Patchogue, NY 11772
(631) 475-0422
Patchogue, NY 11772
(631) 475-0422
Gr: PK-8 | 200 students Avg. class size: 20 students Sports: 8 | Extracurrculars: 8 Acceptance rate listed
Madonna Height School
All-girls | Alternative School
151 Burrs Ln
Huntington Station, NY 11746
(631) 213-0188
Huntington Station, NY 11746
(631) 213-0188
Gr: 7-12 | 44 students
Maryhaven Center Of Hope
Special Education School (Catholic)
450 Myrtle Ave
Port Jefferson, NY 11777
(631) 474-3400
Port Jefferson, NY 11777
(631) 474-3400
Gr: Inquire with school | 47 students Avg. class size: 6 students
Nysarc Inc-suffolk Chapter
Special Education School
2900 Veterans Memorial Hwy
Bohemia, NY 11716
(631) 218-4949
Bohemia, NY 11716
(631) 218-4949
Gr: PK | 109 students Avg. class size: 15 students
160 N Main Street
Southampton, NY 11968
(631) 283-9140
Southampton, NY 11968
(631) 283-9140
Gr: PK-8 | 326 students Avg. class size: 33 students Tuition listed
2 St Johns Place
Center Moriches, NY 11934
(631) 878-1033
Center Moriches, NY 11934
(631) 878-1033
Gr: PK-8 | 209 students Avg. class size: 19 students Sports: 6 | Extracurrculars: 3 Tuition listed
18 Goodfriend Road
East Hampton, NY 11937
(631) 907-5268
East Hampton, NY 11937
(631) 907-5268
Gr: PK-12 | 359 students Avg. class size: 11 students Sports: 17 | Extracurrculars: 22 Tuition & acceptance rate listed
St. Anthony's High School
(Catholic)
275 Wolf Hill Rd
Melville, NY 11747
(631) 271-2020
Melville, NY 11747
(631) 271-2020
Gr: 9-12 | 2,305 students Tuition & acceptance rate listed
1170 Montauk Highway
West Islip, NY 11795
(631) 587-8000
West Islip, NY 11795
(631) 587-8000
Gr: 9-12 | 1,200 student Avg. class size: 28 students Sports: 28 | Extracurrculars: 2 Tuition & acceptance rate listed
St. Mary School
(Catholic)
16 Harrison Ave
East Islip, NY 11730
(631) 581-3423
East Islip, NY 11730
(631) 581-3423
Gr: PK-8 | 501 students Tuition & acceptance rate listed
284 E Main St
Smithtown, NY 11787
(631) 724-0285
Smithtown, NY 11787
(631) 724-0285
Gr: PK-8 | 463 students
St. Patrick School
(Catholic)
Montauk Hwy
Bay Shore, NY 11706
(631) 665-0569
Bay Shore, NY 11706
(631) 665-0569
Gr: PK-8 | 531 students Tuition listed
360 Main St
Huntington, NY 11743
(631) 385-3322
Huntington, NY 11743
(631) 385-3322
Gr: PK-8 | 541 students
The Stony Brook School![The Stony Brook School Photo - The Stony Brook School, founded in 1922, is an independent college preparatory school (grades 7-12) that exists to challenge young men and women to know Jesus Christ as Lord, to love others as themselves, and to grow in knowledge and skill, in order that they may serve the world through their character and leadership. "Character Before Career"]( "The Stony Brook School Photo - The Stony Brook School, founded in 1922, is an independent college preparatory school (grades 7-12) that exists to challenge young men and women to know Jesus Christ as Lord, to love others as themselves, and to grow in knowledge and skill, in order that they may serve the world through their character and leadership. \"Character Before Career\"")
(Christian)
1 Chapman Parkway
Stony Brook, NY 11790
(631) 751-1800
Stony Brook, NY 11790
(631) 751-1800
Gr: 7-12 | 487 students Avg. class size: 14 students Sports: 15 | Extracurrculars: 24 Tuition & acceptance rate listed
1025 5th Ave
East Northport, NY 11731
(631) 261-5130
East Northport, NY 11731
(631) 261-5130
Gr: PK-8 | 358 students Sports: 6 | Extracurrculars: 12 Tuition listed
722 Deer Park Rd
Huntington Station, NY 11746
(631) 242-5359
Huntington Station, NY 11746
(631) 242-5359
Gr: PK-12 | 212 students Avg. class size: 15 students Sports: 8 | Extracurrculars: 5 Tuition & acceptance rate listed
175 Wolf Hill Road
Melville, NY 11747
(631) 423-2658
Melville, NY 11747
(631) 423-2658
Gr: K-12 | 25 students Avg. class size: 1 student Sports: 2 | Extracurrculars: 2
The Anne Brower School
Daycare / Preschool
50 Lawrence Hill Road
Huntington, NY 11743
(631) 423-4147
Huntington, NY 11743
(631) 423-4147
Gr: NS-PK
Ascent School For Individuals With Autism
Special Education School
819 Grand Blvd Ste 2
Deer Park, NY 11729
(631) 254-6100
Deer Park, NY 11729
(631) 254-6100
Gr: 5-12 | 19 students Avg. class size: 6 students
Bethesda Sda Junior Academy
(Seventh Day Adventist)
76 Parkway Ave
Amityville, NY 11701
(631) 842-3321
Amityville, NY 11701
(631) 842-3321
Gr: K-8 | 47 students
Bohemia KinderCare![Bohemia KinderCare Photo - Bohemia KinderCare Front]( "Bohemia KinderCare Photo - Bohemia KinderCare Front")
Daycare / Preschool
3502-3504 Veterans Memorial Hwy
Bohemia, NY 11716
(631) 580-5221
Bohemia, NY 11716
(631) 580-5221
Gr: NS-PK
Brookhaven country day school
Daycare / Preschool
79 Long Island Ave
Yaphank, NY 11980
(631) 924-4033
Yaphank, NY 11980
(631) 924-4033
Gr: NS | 136 students Avg. class size: 10 students
Ca Montessori Children's Center
Montessori School
1 Ca Plaza
Islandia, NY 11749
(631) 342-3000
Islandia, NY 11749
(631) 342-3000
Gr: NS | 80 students
Cdlt Ctr-kiddi Academy Of E Setau
Daycare / Preschool
10 Research Way
East Setauket, NY 11733
(631) 941-2100
East Setauket, NY 11733
(631) 941-2100
Gr: PK-K | 175 students
Show 47 more private schools in Suffolk County, NY (out of 82 total schools)
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Suffolk County Private Schools (Closed)
School
Location
Quick Facts
37 Rollstone Avenue
West Sayville, NY 11796
(631) 589-2180
West Sayville, NY 11796
(631) 589-2180
Gr: K-12 | 50 students Avg. class size: 8 students Acceptance rate listed
Bay Shore Christian School (Closed 2025)
(Christian)
211 Bay Shore Rd
Bay Shore, NY 11706
(631) 665-5241
Bay Shore, NY 11706
(631) 665-5241
Gr: PK-5 | 81 students Avg. class size: 10 students Acceptance rate listed
1225 Ostrander Ave
Riverhead, NY 11901
(631) 727-5900
Riverhead, NY 11901
(631) 727-5900
Gr: 7-12 | 467 students
Chatterbox Day School (Closed 2015)
Daycare / Preschool
52 Hawthorne Ave
East Islip, NY 11730
(631) 581-4756
East Islip, NY 11730
(631) 581-4756
Gr: PK-1 | 61 students
74 Suffolk Lane
East Islip, NY 11730
(631) 581-1035
East Islip, NY 11730
(631) 581-1035
Gr: PK-12 | 63 students
2 Indian Head Rd
Commack, NY 11725
(631) 543-0202
Commack, NY 11725
(631) 543-0202
Gr: PK-8 | 223 students
74 Hauppauge Rd
Commack, NY 11725
(631) 368-2600
Commack, NY 11725
(631) 368-2600
Gr: K-8 | 70 students Avg. class size: 10 students Tuition & acceptance rate listed
Lake Grove School (Closed 2020)
Special Education School
Moriches Road
Lake Grove, NY 11755
(516) 585-8776
Lake Grove, NY 11755
(516) 585-8776
Gr: 8-12 | 60 students
821 Hawkins Ave
Lake Grove, NY 11755
(631) 585-0521
Lake Grove, NY 11755
(631) 585-0521
Gr: PK-8 | 26 students
New Discovery Early Childhood Center (Closed 2016)
Daycare / Preschool
180 Lawrence Rd
Kings Park, NY 11754
(631) 544-0830
Kings Park, NY 11754
(631) 544-0830
Gr: K | 127 students
240 S Wellwood Ave
Lindenhurst, NY 11757
(631) 226-0208
Lindenhurst, NY 11757
(631) 226-0208
Gr: PK-8 | 263 students
200 W Main St
Sayville, NY 11782
(631) 589-3426
Sayville, NY 11782
(631) 589-3426
Gr: PK-8 | 187 students
Rainbow Chimes, Inc. (Closed 2008)
Daycare / Preschool
320 Broadway-greenlawn Rd.
Huntington, NY 11743
(631) 427-6300
Huntington, NY 11743
(631) 427-6300
Gr: PK-K | 64 students
500 W Montauk Hwy
Bay Shore, NY 11706
(631) 666-0908
Bay Shore, NY 11706
(631) 666-0908
Gr: PK-8 | 220 students
Trinity Regional School (Closed 2004)
Daycare / Preschool (Catholic)
1450 New York Ave
Huntington Station, NY 11745
(631) 549-7450
Huntington Station, NY 11745
(631) 549-7450
Gr: PK-K | 96 students
Frequently Asked Questions
What are the top ranked private schools in Suffolk County, NY?
The top ranked private schools in Suffolk County, NY include The Stony Brook School, The Knox School, and St. John The Baptist Diocesan High School.
How many private schools are located in Suffolk County?
82 private schools are located in Suffolk County.
How much do private schools cost in Suffolk County?
The average tuition cost is $20,283, which is lower than the New York private school average tuition cost of $22,420.
How diverse are private schools in Suffolk County?
Suffolk County private schools are approximately 33% minority students, which is lower than the New York private school average of 40%.
What percentage of students in Suffolk County go to private school?
7% of all K-12 students in Suffolk County are educated in private schools (compared to the NY state average of 15%).
What percentage of private schools are religiously affiliated in Suffolk County?
Which private schools in Suffolk County are often viewed compared to one another?
Popular comparisons of private schools in Suffolk County include: St. John The Baptist Diocesan High School vs. St. Anthony's High School, St. Anthony's High School vs. St. John The Baptist Diocesan High School, Gersh Academy vs. Ascent School For Individuals With Autism
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