Home > New York

Best Suffolk County �� High Schools (2026)

[+] Show Closed �� Schools in Suffolk County, New York

Suffolk County �� Schools (Closed)

School

Location

Quick Facts

apprWest Sayville Christian School (Closed 2025)

(Christian)

37 Rollstone Avenue
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

Gr: PK-5 | 81 students Avg. class size: 10 students Acceptance rate listed

Bishop Mcgann-mercy Diocesan High School (Closed 2015)

(Catholic)

1225 Ostrander Ave
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

Gr: PK-1 | 61 students

The Hewlett School (Closed 2006)

74 Suffolk Lane
East Islip, NY 11730
(631) 581-1035

Gr: PK-12 | 63 students

Holy Family Regional School (Closed 2022)

(Catholic)

2 Indian Head Rd
Commack, NY 11725
(631) 543-0202

Gr: PK-8 | 223 students

The Jewish Academy of Suffolk County (Closed 2018)

(Jewish)

74 Hauppauge Rd
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

Gr: 8-12 | 60 students

Maimonides Day School (Closed 2015)

(Jewish)

821 Hawkins Ave
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

Gr: K | 127 students

Our Lady Of Perpetual Help School (Closed 2020)

(Catholic)

240 S Wellwood Ave
Lindenhurst, NY 11757
(631) 226-0208

Gr: PK-8 | 263 students

Prince Of Peace Regional School (Closed 2010)

(Catholic)

200 W Main St
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

Gr: PK-K | 64 students

St. Peters By The Sea Episcopal Day School (Closed 2010)

(Episcopal)

500 W Montauk Hwy
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

Gr: PK-K | 96 students

Overview

This County (Suffolk County)

This State (NY)

# Schools

26 Schools

View Data

Trends in Total Number of �� High Schools
Year	Suffolk County Total Schools
2025	26
2024	26
2023	24
2022	26
2021	27
2020	27
2019	22
2018	23
2017	24
2016	26
2015	25

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Student Body:

# Students

6,542 Students

235,791 Students

View Data

Trends in the Average Number of Students Per �� High School
Year	Suffolk County Average	New York (NY) Average	National Average
2025	273	355	253
2024	262	351	245
2023	274	346	247
2022	310	351	257
2021	315	342	249
2020	330	351	235
2019	359	362	242
2018	347	359	238
2017	410	343	246
2016	406	342	241
2015	416	326	220

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

% Average Students of Color

39%

38%

View Data

Percentage of Students of Color Trends (2015-2025)
Year	Suffolk County Average	New York (NY) Average	National Average
2025	39%	38%	32%
2024	37%	37%	31%
2023	36%	36%	31%
2022	37%	36%	30%
2021	36%	36%	30%
2020	37%	35%	29%
2019	34%	34%	29%
2018	35%	34%	28%
2017	27%	36%	30%
2016	27%	36%	30%
2015	28%	37%	30%

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Academics and Faculty:

# Teachers

733 Teachers

25,240 Teachers

Average Student-Teacher Ratio

9:1

View Data

Student-Teacher Ratio Trends (2015-2025)
Year	Suffolk County Average	New York (NY) Average	National Average
2025	9:1	9:1	10:1
2024	9:1	9:1	10:1
2023	10:1	10:1	10:1
2022	10:1	9:1	10:1
2021	10:1	9:1	10:1
2020	10:1	10:1	10:1
2019	10:1	10:1	10:1
2018	10:1	10:1	10:1
2017	11:1	10:1	10:1
2016	11:1	10:1	10:1
2015	13:1	11:1	10:1

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

% Average Faculty w/Advanced Degree

84%

76%

View Data

Percentage of Faculty With Advanced Degrees Trends (2015-2025)
Year	Suffolk County Average	New York (NY) Average	National Average
2025	84%	76%	57%
2024	83%	75%	57%
2023	83%	75%	57%
2022	76%	74%	56%
2021	75%	74%	56%
2020	75%	74%	56%
2019	66%	73%	55%
2018	66%	72%	55%
2017	69%	71%	55%
2016	67%	70%	54%
2015	52%	68%	54%

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Average Class Size

13 students

15 students

View Data

Class Size Trends (2015-2025)
Year	Suffolk County Average	New York (NY) Average	National Average
2025	13	15	14
2024	13	14	14
2023	13	14	14
2022	12	14	14
2021	12	14	14
2020	13	14	14
2019	14	14	14
2018	14	14	14
2017	13	14	14
2016	13	14	14
2015	12	14	14

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Average Number of AP Courses

13 courses

11 courses

View Data

Trends in Average Number of AP Courses Offered
Year	Suffolk County Average	New York (NY) Average	National Average
2025	13	12	13
2024	13	11	12
2023	13	11	12
2022	11	11	12
2021	10	11	12
2020	9	11	12
2019	10	10	11
2018	10	10	11
2017	9	10	11
2016	8	10	11
2015	9	9	10

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Average SAT score

1261

(Out of 1600)

1247

View Data

SAT Score Trends (2015-2025)
Year	Suffolk County Average	New York (NY) Average	National Average
2025	1,261	1,247	1,233
2024	1,261	1,249	1,231
2023	1,236	1,242	1,229
2022	1,236	1,246	1,230
2021	1,236	1,244	1,230
2020	1,287	1,240	1,227
2019	1,189	1,235	1,226
2018	1,187	1,224	1,226
2017	1,345	1,236	1,233
2016	1,552	1,324	1,308
2015	1,528	1,270	1,265

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Average ACT score

(Out of 36)

View Data

ACT Score Trends (2015-2025)
Year	Suffolk County Average	New York (NY) Average	National Average
2025	28	28	26
2024	28	28	26
2023	28	28	26
2022	27	27	26
2021	27	27	26
2020	24	27	26
2019	25	27	25
2018	24	26	25
2017	25	26	25
2016	23	26	25
2015	24	25	25

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Tuition and Acceptance Rate:

Average Yearly Tuition Cost

$26,278

$26,864

View Data

Tuition Cost Trends (2015-2025)
Year	Suffolk County Average	New York (NY) Average	National Average
2025	$26,278	$26,593	$17,997
2024	$20,940	$27,572	$17,011
2023	$29,814	$27,456	$16,191
2022	$20,949	$25,281	$15,821
2021	$20,733	$25,108	$15,331
2020	$23,581	$25,090	$15,046
2019	$21,015	$24,507	$14,791
2018	$25,835	$24,031	$14,527
2017	$23,204	$21,902	$14,161
2016	$21,243	$20,183	$13,713
2015	$20,374	$19,018	$13,065

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Average Summer Program Cost

$250

$3,315

View Data

Summer Program Cost Trends (2021-2025)
Year	Suffolk County Average	New York (NY) Average	National Average
2025	$250	$3,208	$1,513
2024	$250	$3,377	$1,498
2023	$250	$3,735	$1,623
2022	$250	$3,226	$1,473
2021	$250	$3,037	$1,580

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Average % on Financial Aid

29%

35%

View Data

Percent on Financial Aid Trends (2015-2025)
Year	Suffolk County Average	New York (NY) Average	National Average
2025	29%	35%	38%
2024	29%	36%	37%
2023	30%	37%	36%
2022	33%	38%	36%
2021	33%	37%	36%
2020	28%	36%	35%
2019	27%	35%	34%
2018	27%	36%	33%
2017	28%	35%	32%
2016	26%	36%	31%
2015	35%	34%	30%

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Average Financial Aid Grant

$6,040

$14,482

View Data

Financial Aid Grant Trends (2015-2025)
Year	Suffolk County Average	New York (NY) Average	National Average
2025	$6,040	$14,482	$9,714
2024	$6,040	$14,698	$9,498
2023	$7,323	$15,519	$8,890
2022	$7,098	$13,349	$8,717
2021	$1,700	$12,754	$8,472
2020	$7,333	$12,990	$8,370
2019	$9,177	$13,183	$7,924
2018	$9,177	$11,364	$7,471
2017	$7,633	$9,105	$7,202
2016	$7,633	$8,991	$6,993
2015	$13,265	$8,381	$6,822

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Average Acceptance Rate

67%

75%

View Data

Acceptance Rate Trends (2015-2025)
Year	Suffolk County Average	New York (NY) Average	National Average
2025	67%	73%	79%
2024	70%	73%	81%
2023	71%	74%	81%
2022	68%	72%	81%
2021	67%	72%	81%
2020	66%	72%	81%
2019	64%	71%	81%
2018	64%	69%	80%
2017	67%	72%	81%
2016	75%	75%	80%
2015	80%	75%	81%

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Average Endowment Size

$10.57 million

$41.62 million

View Data

Endowment Trends (2020-2025)
Year	Suffolk County Average	New York (NY) Average	National Average
2025	$10 M	$42 M	$65 M
2024	$10 M	$34 M	$65 M
2023	$20 M	$32 M	$65 M
2022	$19 M	$27 M	$67 M
2021	$16 M	$26 M	$75 M
2020	$16 M	$24 M	$76 M

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Students by Ethnicity:

0.63

0.51

View Data

Diversity Score Trends
Year	Suffolk County Average	New York (NY) Average	National Average
2025	0.63	0.51	0.61
2024	0.63	0.50	0.60
2023	0.58	0.53	0.60
2022	0.61	0.53	0.58
2021	0.60	0.52	0.57
2020	0.59	0.50	0.57
2019	0.59	0.49	0.56
2018	0.60	0.49	0.55
2017	0.57	0.52	0.54
2016	0.57	0.52	0.54
2015	0.56	0.53	0.53

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

# American Indian Students

5 Students

429 Students

% American Indian Students

n/a

# Asian Students

525 Students

11,858 Students

% Asian Students

View Data

Asian Student Percentage Trends
Year	Suffolk County Average	New York (NY) Average	National Average
2025	8%	5%	5%
2024	8%	5%	6%
2023	10%	5%	6%
2022	14%	6%	5%
2021	13%	5%	5%
2020	13%	5%	5%
2019	11%	6%	5%
2018	10%	6%	5%
2017	5%	4%	4%
2016	6%	4%	4%
2015	5%	4%	4%

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

# Hispanic Students

1,146 Students

15,698 Students

% Hispanic Students

17%

View Data

Hispanic Student Percentage Trends
Year	Suffolk County Average	New York (NY) Average	National Average
2025	17%	7%	9%
2024	17%	7%	9%
2023	12%	7%	8%
2022	11%	7%	8%
2021	11%	7%	8%
2020	11%	7%	8%
2019	11%	7%	8%
2018	11%	7%	8%
2017	9%	8%	7%
2016	8%	8%	8%
2015	9%	9%	8%

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

# Black Students

773 Students

16,795 Students

% Black Students

11%

View Data

Black Student Percentage Trends
Year	Suffolk County Average	New York (NY) Average	National Average
2025	11%	7%	8%
2024	11%	7%	8%
2023	12%	8%	8%
2022	12%	8%	8%
2021	12%	8%	8%
2020	12%	8%	8%
2019	11%	7%	8%
2018	11%	7%	8%
2017	11%	9%	8%
2016	11%	9%	8%
2015	11%	10%	9%

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

# White Students

3,867 Students

161,818 Students

% White Students

57%

69%

View Data

White Student Percentage Trends
Year	Suffolk County Average	New York (NY) Average	National Average
2025	57%	69%	59%
2024	57%	69%	60%
2023	62%	67%	60%
2022	59%	67%	62%
2021	61%	68%	63%
2020	61%	70%	64%
2019	61%	70%	64%
2018	61%	70%	65%
2017	64%	68%	66%
2016	63%	68%	66%
2015	64%	67%	66%

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

# Hawaiian Students

1 Student

2,431 Students

% Hawaiian Students

n/a

# Two or more races Students

n/a

% of Two or more races Students

n/a

# Others Students

484 Students

26,453 Students

% of Others Students

11%

View Data

Other Races Student Percentage Trends
Year	Suffolk County Average	New York (NY) Average	National Average
2025	7%	11%	17%
2024	7%	11%	15%
2023	4%	12%	16%
2022	4%	11%	16%
2021	3%	11%	15%
2020	3%	9%	14%
2019	6%	10%	14%
2018	7%	10%	13%
2017	11%	11%	14%
2016	12%	11%	13%
2015	11%	10%	12%

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

All Ethnic Groups

Extracurriculars and Sports:

Average Number of Extracurriculars

13 extracurriculars

18 extracurriculars

Average Number of Sports

11 sports

10 sports

Frequently Asked Questions

What are the top-ranked private high schools in Suffolk County, NY?

The private high schools in Suffolk County, NY include Ross School, St. Anthony's High School, and The Stony Brook School.

How many private high schools are located in Suffolk County?

25 private high schools are located in Suffolk County.

How much do private high schools cost in Suffolk County?

The average tuition cost is $26,278, which is lower than the New York private school average tuition cost of $26,864.

How diverse are private high schools in Suffolk County?

Suffolk County private high schools are approximately 39% minority students, which is higher than the New York private school average of 38%.

What percentage of private high schools are religiously affiliated in Suffolk County?

38% of private high schools in Suffolk County are religiously affiliated (most commonly Christian and Baptist).

Which private high schools in Suffolk County are often viewed compared to one another?

Recent Articles

January 29, 2026

Parent Engagement in �� Schools in 2026

Explore how parent engagement in private schools builds strong communities, support networks, and student success in 2026.

January 29, 2026

So Many Choices: Navigating �� School Selection in 2026

A 2026 parent guide to choosing the right private school, with updated admissions timelines, tuition trends, affordability strategies, and expert insights.