North Shore Montessori School Photo

Best Stony Brook Private Schools (2026)

For the 2026 school year, there are 3 private schools serving 544 students in Stony Brook, NY.
The top-ranked private school in Stony Brook, NY is The Stony Brook School.
The average acceptance rate is 68%, which is lower than the New York private school average acceptance rate of 75%.
67% of private schools in Stony Brook, NY are religiously affiliated (most commonly Baptist and Christian).

Top-Ranked Stony Brook Private Schools (2026)

School
Location
Quick Facts
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
Gr: 7-12 | 487 students Avg. class size: 14 students Sports: 16 | Extracurrculars: 24 Tuition & acceptance rate listed
International Christian School
(Baptist)
1266 N Country Rd
Stony Brook, NY 11790
(631) 689-7660
Gr: K-12 Avg. class size: 15 students Tuition listed
North Shore Montessori School
North Shore Montessori School Photo
Montessori School
(7)
218 Christian Avenue
Stony Brook, NY 11790
(631) 689-8273
Gr: PK-K | 57 students Avg. class size: 16 students Extracurrculars: 6 Tuition & acceptance rate listed

Overview

This Town (Stony Brook)
This State (NY)
# Schools
3 Schools

Student Body:

# Students
544 Students
430,031 Students
% Average Students of Color
58%
40%

Academics and Faculty:

# Teachers
55 Teachers
41,979 Teachers
Average Student-Teacher Ratio
10:1
10:1
% Average Faculty w/Advanced Degree
71%
76%
Average Class Size
15 students
15 students
Average Number of AP Courses
19 courses
11 courses
Average SAT score
1350
(Out of 1600)
1250
Average ACT score
33
(Out of 36)
28

Tuition and Acceptance Rate:

Average Yearly Tuition Cost
$37,600
$22,376
Average % on Financial Aid
40%
34%
Average Acceptance Rate
68%
75%
Average Endowment Size
$19.4 million
$48.74 million

Students by Ethnicity:

0.62
0.60
# American Indian Students
n/a
949 Students
% American Indian Students
n/a
n/a
# Asian Students
2 Students
18,408 Students
% Asian Students
2%
4%
# Hispanic Students
6 Students
33,771 Students
% Hispanic Students
7%
8%
# Black Students
8 Students
33,736 Students
% Black Students
9%
8%
# White Students
23 Students
253,923 Students
% White Students
27%
59%
# Hawaiian Students
n/a
2,694 Students
% Hawaiian Students
n/a
1%
# Two or more races Students
n/a
n/a
% of Two or more races Students
n/a
n/a
# Others Students
48 Students
84,087 Students
% of Others Students
55%
20%
All Ethnic Groups

Extracurriculars and Sports:

Average Number of Extracurriculars
15 extracurriculars
13 extracurriculars
Average Number of Sports
16 sports
8 sports

Frequently Asked Questions

What are the top-ranked private schools in Stony Brook, NY?
The top-ranked private schools in Stony Brook, NY is The Stony Brook School.
How many private schools are located in Stony Brook?
3 private schools are located in Stony Brook.
What percentage of private schools are religiously affiliated in Stony Brook?
67% of private schools in Stony Brook are religiously affiliated (most commonly Baptist and Christian).

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