Private School Review - Established 2003
Westmont Montessori School
St. Joseph School

Mendham Private Schools

For the 2026-27 school year, there are 3 private schools serving 313 students in Mendham, NJ, 17% of all K-12 students in Mendham, NJ are educated in private schools versus public schools (compared to the NJ state average of 14%).
The average acceptance rate is 90%, which is higher than the New Jersey private school average acceptance rate of 82%.
33% of private schools in Mendham, NJ are religiously affiliated (most commonly Catholic).

Quick Facts (26-27)

Quick Facts (26-27)

Private Schools in Mendham, NJ (2026-27)

Map of The Cottage School
The Cottage School
Gr: NS-8 | 20 students
Extracurriculars: 3
Alternative School
9E Main Street
Mendham, NJ 07945
(908) 719-9610
(1)
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St. Joseph School Photo
St. Joseph School
Gr: NS-8 | 156 students
Catholic
8 W Main St
Mendham, NJ 07945
(973) 543-7474
(2)
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Westmont Montessori School Photo
Westmont Montessori School
Gr: PK-K | 137 students
Avg. class size: 16 students
Extracurriculars: 1
Montessori School
577 State Route 24
Mendham, NJ 07945
(908) 879-6355
(2)
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[+] Show Closed Private Schools in Mendham, New Jersey

Mendham, New Jersey Private Schools (Closed)

Map of Daytop Preparatory School
Daytop Preparatory School
Gr: 9-12 | 66 students
Special Education School
80 W Main St
Mendham, NJ 07945
(973) 543-5656
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Mendham, NJ Private School Trends

3
Private Schools
313
Students
16
Avg. Class Size
11%
Students of Color
9:1
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 (Mendham)
This State (NJ)
# Schools
3 Schools
1,374 Schools
# Students
313 Students
216,203 Students
% Students of Color
11%
40%
0.52
0.63
Show more data/charts: racial breakdown
# American Indian Students
0 Students
942 Students
% American Indian Students
0%
<1%
# Asian Students
2 Students
11,318 Students
% Asian Students
1%
5%
# Hispanic Students
2 Students
15,574 Students
% Hispanic Students
1%
7%
# Black Students
1 Student
14,112 Students
% Black Students
<1%
7%
# White Students
146 Students
116,208 Students
% White Students
50%
54%
# Hawaiian Students
0 Students
292 Students
% Hawaiian Students
0%
<1%
# Others Students
142 Students
58,546 Students
% of Others Students
48%
27%
All Ethnic Groups
Academics
# Teachers
36 Teachers
20,273 Teachers
Average Student-Teacher Ratio
9:1
11:1
% Average Faculty w/Advanced Degree
40%
54%
Average Class Size
16 students
14 students
Admissions & Athletics
Average Acceptance Rate
90%
82%
Average Number of Extracurriculars
2 extracurriculars
12 extracurriculars

Frequently Asked Questions

How many private schools are located in Mendham, NJ?
3 private schools are located in Mendham, NJ.
What percentage of students in Mendham go to private school?
17% of all K-12 students in Mendham are educated in private schools (compared to the NJ state average of 14%).
What percentage of private schools are religiously affiliated in Mendham?
33% of private schools in Mendham are religiously affiliated (most commonly Catholic).

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