Top 5 Best Suffolk County Private High Schools (2024)

For the 2024 school year, there are 24 private high schools serving 6,299 students in Suffolk County, NY.
The top ranked private high schools in Suffolk County, NY include Smithtown Christian School, The Knox School and St. John The Baptist Diocesan High School.
The average acceptance rate is 70%, which is lower than the New York private high school average acceptance rate of 74%.
46% of private high schools in Suffolk County, NY are religiously affiliated (most commonly Christian and Baptist).

Top Ranked Suffolk County Private High Schools (2024)

School
Location
Grades
Students
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
Grades: 6-12
| 118 students
Smithtown Christian School
Smithtown Christian School Photo
(Christian)
(8)
1 Higbie Dr
Smithtown, NY 11787
(631) 265-3334
Grades: K-12
| 347 students
Ross School
Ross School Photo - High School Building
18 Goodfriend Road
East Hampton, NY 11937
(631) 907-5442
Grades: PK-12
| 362 students
St. Anthony's High School
(Catholic)
275 Wolf Hill Rd
Melville, NY 11747
(631) 271-2020
Grades: 9-12
| 2,410 students
St. John The Baptist Diocesan High School
St. John The Baptist Diocesan High School Photo - SJB student produced Stained Glass in front lobby
(Catholic)
(3)
1170 Montauk Highway
West Islip, NY 11795
(631) 587-8000
Grades: 9-12
| 1,200 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"
(Christian)
1 Chapman Parkway
Stony Brook, NY 11790
(631) 751-1800
Grades: 7-12
| 460 students
Upper Room Christian School
Upper Room Christian School Photo - Several students are going to The School of Visual Arts after graduating this year.
(Christian)
(4)
722 Deer Park Rd
Deer Park, NY 11746
(631) 242-5359
Grades: PK-12
| 212 students
The Whole Child Academy
The Whole Child Academy Photo
Special Education School
(9)
175 Wolf Hill Road
Melville, NY 11747
(631) 423-2658
Grades: K-12
| 25 students
Ascent School For Individuals With Autism
Special Education School
819 Grand Blvd Ste 2
Deer Park, NY 11729
(631) 254-6100
Grades: 4-12
| 23 students
The Children's Center At Ucp
Special Education School
250 Marcus Blvd
Hauppauge, NY 11788
(631) 543-2338
Grades: K-12
| 51 students
Cleary School For The Deaf
Special Education School
301 Smithtown Blvd
Nesconset, NY 11767
(631) 588-0530
Grades: PK-12
| 76 students
Gersh Academy
Special Education School
21 Sweet Hollow Rd # 2
Huntington, NY 11743
(516) 986-9580
Grades: K-12
| 121 students
Gersh Academy- Inc
Special Education School
307 Eagle Ave
West Hempstead, NY 11552
(516) 986-9580
Grades: K-12
| 109 students
International Christian School
(Baptist)
1266 N Country Rd
Stony Brook, NY 11790
(631) 689-7660
Grades: K-12
| students
Leonard E. Burket Christian School
Leonard E. Burket Christian School Photo
(Assembly of God)
34 Oak St
Center Moriches, NY 11934
(631) 878-1727
Grades: PK-12
| 102 students
Long Island Baptist Academy
(Baptist)
696 Union Ave
Holtsville, NY 11742
(631) 447-2552
Grades: 2-12
| 7 students
Long Island School For The Gifted
Long Island School For The Gifted Photo - We provide remote learning resources for all our students.
Special Program Emphasis
165 Pidgeon Hill Rd Ste 1
Huntington Station, NY 11746
(631) 423-3557
Grades: PK-9
| 116 students
Madonna Height School
All-girls | Alternative School
151 Burrs Ln
Huntington Station, NY 11746
(631) 213-0188
Grades: 7-12
| 44 students
Our Savior New American School
(Lutheran Church Missouri Synod)
(19)
140 Mark Tree Rd
Centereach, NY 11720
(631) 588-2757
Grades: PK-12
| 188 students
St. Pius V School
18 Old E Neck Rd
Melville, NY 11747
(631) 351-0116
Grades: 1-12
| 147 students
Sunshine Alternative Education Center
Alternative School
468 Boyle Rd
Port Jefferson Station, NY 11776
(631) 476-3099
Grades: 10-12
| 10 students
Victory Christian Academy
(Church of God)
1343 Montauk Hwy
Patchogue, NY 11772
(631) 654-9284
Grades: PK-12
| 70 students
West Sayville Christian School
West Sayville Christian School Photo - In Observance of National School Choice week, students participated in a special chapel sharing their reasons why they love their school.
(Christian)
(5)
37 Rollstone Avenue
West Sayville, NY 11796
(631) 589-2180
Grades: K-11
| 48 students
Winston Preparatory School Long Island
Winston Preparatory School Long Island Photo
Special Education School
30 Deforest Road
Huntington Station, NY 11746
(631) 779-2400
Grades: 3-12
| 53 students
[+] Show Closed Private Schools in Suffolk County, New York

Suffolk County Private Schools (Closed)

School
Location
Grades
Students
1225 Ostrander Ave
Riverhead, NY 11901
(631) 727-5900
Grades: 7-12
| 467 students
74 Suffolk Lane
East Islip, NY 11730
(631) 581-1035
Grades: PK-12
| 63 students
2 Indian Head Rd
Commack, NY 11725
(631) 543-0202
Grades: PK-8
| 223 students
74 Hauppauge Rd
Commack, NY 11725
(631) 368-2600
Grades: K-8
| 70 students
Lake Grove School (Closed 2020)
Special Education School
Moriches Road
Lake Grove, NY 11755
(516) 585-8776
Grades: 8-12
| 60 students
821 Hawkins Ave
Lake Grove, NY 11755
(631) 585-0521
Grades: PK-8
| 26 students
180 Lawrence Rd
Kings Park, NY 11754
(631) 544-0830
Grades: K
| 127 students
240 S Wellwood Ave
Lindenhurst, NY 11757
(631) 226-0208
Grades: PK-8
| 263 students
200 W Main St
Sayville, NY 11782
(631) 589-3426
Grades: PK-8
| 187 students
320 Broadway-greenlawn Rd.
Huntington, NY 11743
(631) 427-6300
Grades: PK-K
| 64 students
500 W Montauk Hwy
Bay Shore, NY 11706
(631) 666-0908
Grades: PK-8
| 220 students
Trinity Regional School (Closed 2004)
Daycare / Preschool (Catholic)
1450 New York Ave
Huntington Station, NY 11745
(631) 549-7450
Grades: PK-K
| 96 students

Frequently Asked Questions

What are the top ranked private high schools in Suffolk County, NY?
The top ranked private high schools in Suffolk County, NY include Smithtown Christian School, The Knox School and St. John The Baptist Diocesan High School.
How many private high schools are located in Suffolk County, NY?
24 private high schools are located in Suffolk County, NY.
How diverse are private high schools in Suffolk County, NY?
Suffolk County, NY private high schools are approximately 36% minority students, which is lower than the New York private school average of 37%.
What percentage of private high schools are religiously affiliated in Suffolk County, NY?
46% of private high schools in Suffolk County, NY are religiously affiliated (most commonly Christian and Baptist).

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