The Goddard School Photo

Best Union County Private Schools (2026)

For the 2026 school year, there are 90 private schools serving 14,056 students in Union County, NJ (there are 186 public schools, serving 102,682 public students). 12% of all K-12 students in Union County, NJ are educated in private schools (compared to the NJ state average of 14%).
The average tuition cost is $18,798, which is lower than the New Jersey private school average tuition cost of $18,801.
42% of private schools in Union County, NJ are religiously affiliated (most commonly Catholic and Jewish).

Top-Ranked Union County Private Schools (2026)

School
Location
Quick Facts
Oak Knoll School Of The Holy Child
Oak Knoll School Of The Holy Child Photo
All-girls (Catholic)
(7)
44 Blackburn Road
Summit, NJ 07901
(908) 522-8100
Gr: 7-12 | 323 students Avg. class size: 61 students Sports: 15 | Extracurrculars: 38 Tuition listed
44 Blackburn Road
Summit, NJ 07901
(908) 522-8109
Gr: PK-6 | 178 students Avg. class size: 12 students Extracurrculars: 14 Tuition listed
American Boys Preparatory Academy
American Boys Preparatory Academy Photo - American Boys Prep student learning at his own pace.
All-boys | Alternative School
(1)
1020 Springfield Ave
Mountainside, NJ 07092
(908) 516-4231
Gr: 5-8 | 12 students Avg. class size: 5 students Sports: 1 | Extracurrculars: 7 Tuition & acceptance rate listed
Cornerstone Day School
Special Education School
(7)
10-12 Commerce Drive
Cranford, NJ 07016
(908) 543-0220
Gr: 5-12 | 130 students Avg. class size: 8 students Sports: 6 Tuition listed
Bruriah High School For Girls
All-boys (Jewish)
35 North Avenue
Elizabeth, NJ 07208
(908) 355-4850
Gr: 7-12 | 350 students Avg. class size: 15 students Tuition & acceptance rate listed
Cornerstone School Of Summit
Cornerstone School Of Summit Photo - We support children's creative expression.
Daycare / Preschool
561 Springfield Ave
Summit, NJ 07901
(908) 277-4400
Gr: NS-PK | 654 students Avg. class size: 14 students Extracurrculars: 4 Tuition & acceptance rate listed
Five Points Y M C A
Daycare / Preschool (Christian)
201 Tucker Avenue
Union, NJ 07083
(908) 688-9622
Gr: PK-K | 80 students
FlexSchool
FlexSchool Photo
Alternative School
(7)
34 Russo Place
Berkeley Heights, NJ 07922
(908) 322-0554
Gr: K-12 | 100 students Avg. class size: 4 students Extracurrculars: 7 Tuition listed
Holy Trinity School - Westfield
Holy Trinity School - Westfield Photo - 8th Graders Make Cards for Homebound Parishioners
(Catholic)
(3)
336 First St.
Westfield, NJ 07090
(908) 233-0484
Gr: PK-8 | 375 students Avg. class size: 15 students Sports: 6 | Extracurrculars: 5 Tuition & acceptance rate listed
The Jardine Academy
Special Education School
373 Clermont Terrace
Union, NJ 07083
(908) 354-5800
Gr: NS | 62 students
330 Elmora Ave
Elizabeth, NJ 07208
(908) 355-4850
Gr: K-8 | 306 students Avg. class size: 18 students
Kent Place School
All-girls
(2)
42 Norwood Avenue
Summit, NJ 07901
(908) 273-0900
Gr: PK-12 | 640 students Avg. class size: 12 students Tuition & acceptance rate listed
Kings Daughters Day School
Daycare / Preschool
(1)
502 West Front St
Plainfield, NJ 07060
(908) 756-7788
Gr: PK-K | 153 students
Koinonia Academy
Koinonia Academy Photo - Koinonia Students have recreation on the school's beautiful 11 acre campus.
(Catholic)
(7)
1040 Plainfield Ave
Plainfield, NJ 07060
(908) 668-9883
Gr: PK-12 | 278 students Extracurrculars: 4 Tuition listed
Oratory Preparatory School
All-boys (Catholic)
(3)
1 Beverly Rd
Summit, NJ 07901
(908) 273-1084
Gr: 7-12 | 376 students Tuition & acceptance rate listed
Roselle Catholic High School
Roselle Catholic High School Photo
(Catholic)
350 Raritan Rd
Roselle, NJ 07203
(908) 245-2350
Gr: 9-12 | 354 students Avg. class size: 23 students Sports: 13 | Extracurrculars: 32 Tuition & acceptance rate listed
St. John The Apostle School
(Catholic)
(1)
Valley Road
Clark, NJ 07066
(732) 388-1360
Gr: PK-8 | 405 students
St. John The Apostle School
(Catholic)
1805 Penbrook Ter
Linden, NJ 07036
(908) 486-6363
Gr: PK-8 | 439 students
St. Joseph The Carpenter School
(Catholic)
(1)
140 East 3rd Avenue
Roselle, NJ 07203
(908) 245-6560
Gr: PK-8 | 227 students Avg. class size: 18 students Sports: 6 | Extracurrculars: 9 Tuition listed
St. Michael Parish School
(Catholic)
1212 Kelly St
Union, NJ 07083
(908) 688-1063
Gr: PK-8 | 342 students Avg. class size: 20 students Tuition listed
St. Michael School
(Catholic)
(9)
100 Alden St
Cranford, NJ 07016
(908) 276-9425
Gr: PK-8 | 320 students Tuition listed
St. Theresa Grade School
St. Theresa Grade School Photo - St. Theresa School 540 Washington Ave Kenilworth, NJ 07033 908 276-7220
(Catholic)
(1)
540 Washington Ave
Kenilworth, NJ 07033
(908) 276-7220
Gr: PK-8 | 313 students
St. Theresa Of The Child Jesus School
(Catholic)
(3)
705 Clinton Street
Linden, NJ 07036
(908) 862-1619
Gr: K-8 | 150 students Avg. class size: 15 students
Temple Emanu-el Early Childhood Education Program
Daycare / Preschool (Jewish)
756 E Broad St
Westfield, NJ 07090
(908) 232-6770
Gr: PK-K | 141 students
Trinity Temple Academy
Trinity Temple Academy Photo - Trinity Temple Academy (TTA) is a Seventh-day Adventist school for K through 8th grade scholars of ALL faiths and backgrounds. It is our mission to fully promote excellence in character development and academic achievement in a Christ-centered environment.
(Seventh Day Adventist)
(1)
1500 Maple Ave
Hillside, NJ 07205
(973) 923-7568
Gr: K-8 | 41 students Avg. class size: 12 students Sports: 5 | Extracurrculars: 3 Tuition listed
Union Catholic Regional High School
(Catholic)
1600 Martine Avenue
Scotch Plains, NJ 07076
(908) 889-1600
Gr: 9-12 | 740 students Sports: 16 Tuition & acceptance rate listed
The Academy of Our Lady of Peace
The Academy of Our Lady of Peace Photo
(Catholic)
99 South Street
New Providence, NJ 07974
(908) 464-8657
Gr: PK-8 | 212 students Avg. class size: 15 students Sports: 6 | Extracurrculars: 12 Tuition & acceptance rate listed
Blessed Sacrament Elementary School
(Catholic)
1086 North Avenue
Elizabeth, NJ 07201
(908) 352-8629
Gr: PK-8 | 225 students
303 Chestnut Street
Roselle, NJ 07203
(908) 241-6470
Gr: PK-4 | 126 students
The Children's Academy
The Children's Academy Photo
Montessori School
(11)
37 Church Mall
Springfield, NJ 07081
(973) 379-3524
Gr: PK-K | 58 students Avg. class size: 18 students Tuition & acceptance rate listed
Christian Children Institute
Daycare / Preschool (Christian)
Po Box 2852 350 Leland Ave
Plainfield, NJ 07062
(908) 756-7562
Gr: PK-K | 30 students
Christopher Academy
Montessori School
1390 Terrill Rd
Scotch Plains, NJ 07076
(908) 233-7447
Gr: K-1 | 28 students
Christopher Academy
Montessori School
510 Hillcrest Avenue
Westfield, NJ 07090
(908) 233-7447
Gr: PK-1 | 95 students
Clark KinderCare
Daycare / Preschool
89 Terminal Ave.
Clark, NJ 07066
(732) 340-1900
Gr: NS-PK | 34 students
Compass School House
Daycare / Preschool
125 Elmer St
Westfield, NJ 07090
(908) 232-2084
Gr: PK-K | 215 students
Show 55 more private schools in Union County, NJ (out of 90 total schools)
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[+] Show Closed Private Schools in Union County, New Jersey

Union County Private Schools (Closed)

School
Location
Quick Facts
416 Linden Ave
Elizabeth, NJ 07202
(908) 352-4406
Gr: PK-8 | 175 students
840 N Broad St
Elizabeth, NJ 07208
(908) 352-0670
Gr: 9-12 | 127 students Avg. class size: 45 students Tuition & acceptance rate listed
225 N 8th St
Kenilworth, NJ 07033
(908) 276-7750
Gr: PK-K | 20 students
970 Suburban Road
Union, NJ 07083
(908) 687-8415
Gr: PK-8 | 124 students Avg. class size: 26 students Tuition & acceptance rate listed
Holycross Christian Nursery School (Closed 2010)
Daycare / Preschool (Evangelical Lutheran Church in America (formerly AELC, ALC, or LCA))
639 Mountain Avenue
Springfield, NJ 07081
(973) 379-7160
Gr: PK-K | 93 students
Little Lambs Preschool And Kindergarten (Closed 2020)
Daycare / Preschool (Lutheran Church Missouri Synod)
229 Cowperthwaite Place
Westfield, NJ 07090
(908) 232-1592
Gr: PK-K | 12 students Avg. class size: 12 students Tuition & acceptance rate listed
Mcauley School (Closed 2010)
Special Education School
107 Westervelt Ave
Plainfield, NJ 07060
(908) 754-4114
Gr: Inquire with school | 33 students
Messiah Lutheran School (Closed 2004)
(Lutheran Church Missouri Synod)
630 E Front Street
Plainfield, NJ 07060
(908) 755-8430
Gr: PK-2 | 51 students
227 Center St
Elizabeth, NJ 07202
(908) 352-7419
Gr: PK-8 | 167 students
1003 N Broad Street
Elizabeth, NJ 07208
(908) 352-8029
Gr: K-8 | 177 students
209 Princeton Rd
Elizabeth, NJ 07208
(908) 355-3355
Gr: PK-8 | 210 students
41 S Springfield Ave
Springfield, NJ 07081
(973) 376-5194
Gr: PK-8 | 159 students
101 Westervelt Avenue
Plainfield, NJ 07060
(908) 756-9539
Gr: K-8 | 155 students
237 S Broad St
Elizabeth, NJ 07202
(908) 352-4350
Gr: 9-12 | 184 students Tuition listed
1305 Saint George Ave
Roselle, NJ 07203
(908) 620-0404
Gr: K-4 | 28 students

Overview

This County (Union County)
This State (NJ)
# Schools
92 Schools

Student Body:

# Students
14,056 Students
217,867 Students
% Average Students of Color
45%
40%

Academics and Faculty:

# Teachers
1,130 Teachers
20,239 Teachers
Average Student-Teacher Ratio
12:1
11:1
% Average Faculty w/Advanced Degree
56%
54%
Average Class Size
15 students
14 students
Average Number of AP Courses
13 courses
15 courses
Average SAT score
1025
(Out of 1600)
1262
Average ACT score
30
(Out of 36)
29

Tuition and Acceptance Rate:

Average Yearly Tuition Cost
$18,798
$18,801
Average % on Financial Aid
38%
27%
Average Financial Aid Grant
$2,000
$16,414
Average Acceptance Rate
89%
78%
Average Endowment Size
$10 million
$57.49 million

Students by Ethnicity:

0.71
0.63
# American Indian Students
11 Students
942 Students
% American Indian Students
n/a
1%
# Asian Students
625 Students
11,318 Students
% Asian Students
4%
5%
# Hispanic Students
1,541 Students
15,575 Students
% Hispanic Students
11%
7%
# Black Students
1,504 Students
14,114 Students
% Black Students
11%
7%
# White Students
4,535 Students
116,454 Students
% White Students
33%
53%
# Hawaiian Students
22 Students
292 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
5,666 Students
59,277 Students
% of Others Students
41%
27%
All Ethnic Groups

Extracurriculars and Sports:

Average Number of Extracurriculars
14 extracurriculars
12 extracurriculars
Average Number of Sports
9 sports
7 sports

Frequently Asked Questions

What are the top-ranked private schools in Union County, NJ?
How many private schools are located in Union County?
90 private schools are located in Union County.
How much do private schools cost in Union County?
The average tuition cost is $18,798, which is lower than the New Jersey private school average tuition cost of $18,801.
How diverse are private schools in Union County?
Union County private schools are approximately 45% minority students, which is higher than the New Jersey private school average of 40%.
What percentage of students in Union County go to private school?
12% of all K-12 students in Union County are educated in private schools (compared to the NJ state average of 14%).
What percentage of private schools are religiously affiliated in Union County?
42% of private schools in Union County are religiously affiliated (most commonly Catholic and Jewish).
Which private schools in Union County are often viewed compared to one another?

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