Private School Review - Established 2003
The Stony Brook School Top 10 · Highest Avg. ACT Score (NY)
North Shore Montessori School

Stony Brook Private Schools

For the 2026-27 school year, there are 3 private schools serving 533 students in Stony Brook, NY.
The average acceptance rate is 67%, which is lower than the New York private school average acceptance rate of 79%.
67% of private schools in Stony Brook, NY are religiously affiliated (most commonly Baptist and Christian).

Quick Facts (26-27)

Quick Facts (26-27)

Top Ranked Stony Brook Private Schools (2026-27)

Map of International Christian School
International Christian School
Gr: K-12
Baptist
1266 N Country Rd
Stony Brook, NY 11790
(631) 689-7660
View Profile
The Stony Brook School Photo
The Stony Brook School
Gr: 7-12 | 476 students
Avg. class size: 13 students
Sports: 16 | Extracurriculars: 22
Christian
1 Chapman Parkway
Stony Brook, NY 11790
(631) 751-1800
View Profile
North Shore Montessori School Photo
North Shore Montessori School
Gr: PK-K | 57 students
Avg. class size: 16 students
Extracurriculars: 6
Montessori School
218 Christian Avenue
Stony Brook, NY 11790
(631) 689-8273
(7)
View Profile

Stony Brook, NY Private School Trends

3
Private Schools
533
Students
$39,800
Avg. Tuition
15
Avg. Class Size
50%
Students of Color
10:1
Student-Teacher Ratio
Download town snapshot: CSV | XML | JSON 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.
Enrollment & Diversity
Category
This Town (Stony Brook)
This State (NY)
# Schools
3 Schools
1,795 Schools
# Students
533 Students
424,657 Students
% Students of Color
50%
39%
0.62
0.59
Show more data/charts: racial breakdown
# American Indian Students
0 Students
949 Students
% American Indian Students
0%
<1%
# Asian Students
2 Students
18,397 Students
% Asian Students
2%
5%
# Hispanic Students
6 Students
33,759 Students
% Hispanic Students
7%
8%
# Black Students
8 Students
33,696 Students
% Black Students
9%
8%
# White Students
23 Students
252,994 Students
% White Students
27%
60%
# Hawaiian Students
0 Students
538 Students
% Hawaiian Students
0%
<1%
# Others Students
48 Students
81,171 Students
% of Others Students
55%
19%
All Ethnic Groups
Academics
# Teachers
54 Teachers
41,688 Teachers
Average Student-Teacher Ratio
10:1
10:1
% Average Faculty w/Advanced Degree
92%
75%
Average Class Size
15 students
15 students
Average Number of AP Courses
21 courses
12 courses
Average SAT score
1360
(Out of 1600)
1261
Average ACT score
32
(Out of 36)
29
Tuition & Aid
Average Yearly Tuition Cost
$39,800
$21,768
Average % on Financial Aid
40%
34%
Average Financial Aid Grant
$26,933
$10,886
Average Endowment Size
$19.4 million
$31.78 million
Admissions & Athletics
Average Acceptance Rate
67%
79%
Average Number of Extracurriculars
14 extracurriculars
13 extracurriculars
Average Number of Sports
16 sports
7 sports

Frequently Asked Questions

What are the top ranked private schools in Stony Brook, NY?
The top ranked private schools in Stony Brook, NY include The Stony Brook School and International Christian 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).

Recent Articles

Should Your Child Stay at the Same Private School K–12?
Should Your Child Stay at the Same Private School K–12?
Explore whether your child should attend the same private school from kindergarten through graduation, weighing academic continuity, friendships, changing needs, tuition costs, and opportunities at different educational stages.
When Your Child's Closest Friends Leave Private School
When Your Child's Closest Friends Leave Private School
Learn how to support your child when close friends leave private school, manage loneliness, maintain friendships, encourage new connections, recognize emotional challenges, and decide when additional school support is needed.
When Your Child Doesn't Connect With Their Teacher
When Your Child Doesn't Connect With Their Teacher
Discover when parents should intervene if their child struggles to connect with a private school teacher, including warning signs, communication strategies, classroom concerns, and practical steps toward improving relationships.
Area schools map

Filter Schools

School Level
Must Offer Grade
Show more
Gender
School Focus
Religious Affiliation
ADD/ADHD Support
Summer Program

Quick Links

SCHOOL SEARCH TOOLS:
SCHOOL BY TYPE (NY):
OPEN-HOUSES & JOBS:
PUBLIC & BOARDING SCHOOLS:
PRIVATE SCHOOL DATA: