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

Mendham Private Preschools (2026-27)

For the 2026-27 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 85%.
33% of private preschools in Mendham, NJ are religiously affiliated (most commonly Catholic).

Quick Facts (2026-27)

Quick Facts (2026-27)

Private Preschools 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)
View Profile
St. Joseph School Photo
St. Joseph School
Gr: NS-8 | 156 students
Catholic
8 W Main St
Mendham, NJ 07945
(973) 543-7474
(2)
View Profile
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)
View Profile
[+] 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
View Profile

Mendham, NJ Private School Trends (9-Year)

3
Private Schools
+200.0% (+2 schools) 9-yr
313
Students
+203.9% (+210 students) 9-yr
16
Avg. Class Size
-5.9% (-1 student) 9-yr
11%
Students of Color
+57.1% (+4.0 pp) 7-yr
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
998 Schools
# Students
313 Students
138,238 Students

Trends in the Average Number of Students Per Private Preschool

YearMendham, NJ AvgNew Jersey (NJ)National
2025104149191
2024104148187
2023104147185
2022110151188
2021110149184
2020110146179
2019160148182
2018160148181
2017125146183
2016103144181
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% Students of Color
11%
40%

Percentage of Students of Color Trends (2018-2025)

YearMendham, NJ AvgNew Jersey (NJ)National
202511%40%32%
202411%40%32%
20236%40%32%
202213%39%31%
202113%40%32%
202013%40%31%
20197%39%31%
20187%38%30%
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0.52
0.66

Diversity Score Trends

YearMendham, NJ AvgNew Jersey (NJ)National
20250.520.660.65
20240.520.660.65
20230.520.660.65
20220.530.670.64
20210.530.670.64
20200.530.670.64
20190.480.670.64
20180.480.670.64
20170.360.660.62
20160.420.660.62
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Show more data/charts: racial breakdown
# American Indian Students
n/a
390 Students
% American Indian Students
n/a
n/a
# Asian Students
2 Students
7,564 Students
% Asian Students
1%
6%

Asian Student Percentage Trends

YearMendham, NJ AvgNew Jersey (NJ)National
20251%6%4%
20241%6%5%
20231%6%5%
20221%6%5%
20211%6%5%
20201%5%4%
20192%6%5%
20182%5%5%
20172%5%3%
20162%5%3%
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# Hispanic Students
2 Students
8,796 Students
% Hispanic Students
1%
7%

Hispanic Student Percentage Trends

YearMendham, NJ AvgNew Jersey (NJ)National
20251%7%8%
20241%7%8%
20231%7%8%
20221%7%8%
20211%7%7%
20201%7%7%
20191%7%7%
20181%7%7%
20172%7%6%
20162%7%7%
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# Black Students
1 Student
6,734 Students
% Black Students
n/a
5%

Black Student Percentage Trends

YearMendham, NJ AvgNew Jersey (NJ)National
20221%6%6%
20211%7%7%
20201%7%7%
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# White Students
146 Students
56,527 Students
% White Students
50%
42%

White Student Percentage Trends

YearMendham, NJ AvgNew Jersey (NJ)National
202550%42%48%
202450%41%48%
202350%40%48%
202250%43%50%
202150%42%50%
202050%43%51%
201965%43%52%
201865%43%52%
201719%43%54%
201623%43%54%
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# 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
54,444 Students
% of Others Students
48%
40%

Other Races Student Percentage Trends

YearMendham, NJ AvgNew Jersey (NJ)National
202548%40%34%
202448%41%33%
202348%41%33%
202247%38%31%
202147%38%31%
202047%38%31%
201932%37%30%
201832%38%30%
201777%38%30%
201673%38%29%
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All Ethnic Groups
Academics
# Teachers
36 Teachers
11,515 Teachers
Average Student-Teacher Ratio
9:1
12:1

Student-Teacher Ratio Trends (2016-2025)

YearMendham, NJ AvgNew Jersey (NJ)National
20259:112:112:1
20249:112:112:1
20239:112:112:1
202212:112:112:1
202112:112:112:1
202012:113:112:1
201912:113:112:1
201812:113:112:1
201710:112:112:1
20169:112:112:1
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% Average Faculty w/Advanced Degree
40%
50%

Percentage of Faculty With Advanced Degrees Trends (2017-2025)

YearMendham, NJ AvgNew Jersey (NJ)National
202540%50%51%
202440%49%51%
202340%49%51%
202240%51%51%
202140%50%50%
202040%49%50%
201940%49%50%
201840%50%50%
201740%49%49%
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Average Class Size
16 students
15 students

Class Size Trends (2016-2025)

YearMendham, NJ AvgNew Jersey (NJ)National
2025161516
2024161516
2023161516
2022201516
2021201516
2020201516
2019201516
2018201516
2017201516
2016171516
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Tuition & Aid
Admissions & Athletics
Average Acceptance Rate
90%
85%
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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