St. Joseph School Photo - The St. Joseph School faculty, led by Principal, Lisa Gillespie, is well educated, is constantly keeping up with the latest educational techniques and loves the students...always wanting what is best for them!

Best Mendham Private Preschools (2026)

For the 2026 school year, there are 3 private preschools serving 313 students in Mendham, NJ.
The average acceptance rate is 90%, which is higher than the New Jersey private preschool average acceptance rate of 80%.
33% of private preschools in Mendham, NJ are religiously affiliated (most commonly Catholic).

Private Preschools in Mendham, NJ (2026)

School
Location
Quick Facts
The Cottage School
Alternative School
(1)
9E Main Street
Mendham, NJ 07945
(908) 719-9610
Gr: NS-8 | 20 students Extracurrculars: 3
St. Joseph School
St. Joseph School Photo - The St. Joseph School faculty, led by Principal, Lisa Gillespie, is well educated, is constantly keeping up with the latest educational techniques and loves the students...always wanting what is best for them!
(Catholic)
(2)
8 W Main St
Mendham, NJ 07945
(973) 543-7474
Gr: NS-8 | 156 students
Westmont Montessori School
Westmont Montessori School Photo
Daycare / Preschool
(2)
577 State Route 24
Mendham, NJ 07945
(908) 879-6355
Gr: PK-K | 137 students Avg. class size: 16 students Extracurrculars: 1 Tuition & acceptance rate listed
[+] Show Closed Private Schools in Mendham, New Jersey

Mendham, New Jersey Private Schools (Closed)

School
Location
Quick Facts
80 W Main St
Mendham, NJ 07945
(973) 543-5656
Gr: 9-12 | 66 students

Overview

This Town (Mendham)
This State (NJ)
# Schools
3 Schools

Student Body:

# Students
313 Students
138,875 Students
% Average Students of Color
11%
40%

Academics and Faculty:

# Teachers
36 Teachers
11,502 Teachers
Average Student-Teacher Ratio
9:1
12:1
% Average Faculty w/Advanced Degree
40%
50%
Average Class Size
16 students
15 students
Average Number of AP Courses
10 courses
12 courses

Tuition and Acceptance Rate:

Average Acceptance Rate
90%
80%

Students by Ethnicity:

0.52
0.66
# American Indian Students
n/a
403 Students
% American Indian Students
n/a
n/a
# Asian Students
2 Students
7,571 Students
% Asian Students
1%
6%
# Hispanic Students
2 Students
8,894 Students
% Hispanic Students
1%
7%
# Black Students
1 Student
6,761 Students
% Black Students
n/a
5%
# White Students
146 Students
56,601 Students
% White Students
50%
42%
# Hawaiian Students
n/a
146 Students
% Hawaiian Students
n/a
n/a
# Two or more races Students
n/a
n/a
% of Two or more races Students
n/a
n/a
# Others Students
142 Students
54,866 Students
% of Others Students
48%
40%
All Ethnic Groups

Extracurriculars and Sports:

Average Number of Extracurriculars
2 extracurriculars
9 extracurriculars

Frequently Asked Questions

How many private preschools are located in Mendham, NJ?
3 private preschools are located in Mendham, NJ.
What percentage of private preschools are religiously affiliated in Mendham?
33% of private preschools in Mendham are religiously affiliated (most commonly Catholic).

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