For the 2025-26 school year, there are 18 private high schools serving 4,340 students in Union County, NJ.
The top ranked private high schools in Union County, NJ include Oak Knoll School Of The Holy Child, Kent Place School, and Oratory Preparatory School.
The average tuition cost is $21,664, which is lower than the New Jersey private high school average tuition cost of $22,975.
Top Ranked Union County Private High Schools (2025-26)
School
Location
Quick Facts
44 Blackburn Road
Summit, NJ 07901
(908) 522-8100
Summit, NJ 07901
(908) 522-8100
Gr: 7-12 | 323 students Avg. class size: 61 students Sports: 15 | Extracurrculars: 38 Tuition listed
10-12 Commerce Drive
Cranford, NJ 07016
(908) 543-0220
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
Elizabeth, NJ 07208
(908) 355-4850
Gr: 7-12 | 350 students Avg. class size: 15 students Tuition & acceptance rate listed
34 Russo Place
Berkeley Heights, NJ 07922
(908) 322-0554
Berkeley Heights, NJ 07922
(908) 322-0554
Gr: K-12 | 100 students Avg. class size: 4 students Extracurrculars: 7 Tuition listed
42 Norwood Avenue
Summit, NJ 07901
(908) 273-0900
Summit, NJ 07901
(908) 273-0900
Gr: PK-12 | 640 students Avg. class size: 12 students Tuition & acceptance rate listed
1040 Plainfield Ave
Plainfield, NJ 07060
(908) 668-9883
Plainfield, NJ 07060
(908) 668-9883
Gr: PK-12 | 278 students Extracurrculars: 4 Tuition listed
1 Beverly Rd
Summit, NJ 07901
(908) 273-1084
Summit, NJ 07901
(908) 273-1084
Gr: 7-12 | 376 students Tuition & acceptance rate listed
Roselle Catholic High School![Roselle Catholic High School Photo]( "Roselle Catholic High School Photo")
(Catholic)
350 Raritan Rd
Roselle, NJ 07203
(908) 245-2350
Roselle, NJ 07203
(908) 245-2350
Gr: 9-12 | 354 students Avg. class size: 23 students Sports: 13 | Extracurrculars: 32 Tuition & acceptance rate listed
Union Catholic Regional High School
(Catholic)
1600 Martine Avenue
Scotch Plains, NJ 07076
(908) 889-1600
Scotch Plains, NJ 07076
(908) 889-1600
Gr: 9-12 | 740 students Sports: 16 Tuition & acceptance rate listed
Deron School 1![Deron School 1 Photo - The Deron School of New Jersey, Montclair, NJ]( "Deron School 1 Photo - The Deron School of New Jersey, Montclair, NJ")
Special Education School
1140 Commerce Ave
Union, NJ 07083
(908) 206-0444
Union, NJ 07083
(908) 206-0444
Gr: PK-11 | 70 students Avg. class size: 8 students
First Children School
Special Education School
330 South Ave
Fanwood, NJ 07023
(908) 654-2470
Fanwood, NJ 07023
(908) 654-2470
Gr: PK-12 | 80 students Avg. class size: 9 students Tuition listed
397 Columbia Ave
Hillside, NJ 07205
(908) 686-6740
Hillside, NJ 07205
(908) 686-6740
Gr: K-9 | 194 students Tuition listed
Honor Ridge Academy
Special Education School
342 Madison Hill Rd
Clark, NJ 07066
(732) 827-5885
Clark, NJ 07066
(732) 827-5885
Gr: 3-12 | 88 students Avg. class size: 15 students
I Am's Temple Christian Academy
(Christian)
620 Ravine Rd
Plainfield, NJ 07062
(908) 753-6222
Plainfield, NJ 07062
(908) 753-6222
Gr: K-9 | 118 students Tuition listed
Kohler Academy![Kohler Academy Photo]( "Kohler Academy Photo")
Special Education School
1137 Globe Ave
Mountainside, NJ 07092
(908) 518-0021
Mountainside, NJ 07092
(908) 518-0021
Gr: PK-12 | 35 students
One Valley Road
Clark, NJ 07066
(732) 382-1952
Clark, NJ 07066
(732) 382-1952
Gr: 9-12 | 194 students Avg. class size: 22 students Sports: 14 | Extracurrculars: 42 Tuition & acceptance rate listed
1000 Cellar Avenue
Scotch Plains, NJ 07076
(908) 753-0330
Scotch Plains, NJ 07076
(908) 753-0330
Gr: K-12 | 160 students Avg. class size: 12 students Extracurrculars: 3 Tuition listed
Sinai Christian Academy
Montessori School (Christian)
2301 Grier Ave
Linden, NJ 07036
(908) 486-2006
Linden, NJ 07036
(908) 486-2006
Gr: PK-12 | 110 students Avg. class size: 12 students Tuition & acceptance rate listed
Union County Private Schools (Closed)
School
Location
Quick Facts
Bender Memorial Academy (Closed 2004)
(Catholic)
416 Linden Ave
Elizabeth, NJ 07202
(908) 352-4406
Elizabeth, NJ 07202
(908) 352-4406
Gr: PK-8 | 175 students
Benedictine Academy (Closed 2023)
All-girls (Catholic)
840 N Broad St
Elizabeth, NJ 07208
(908) 352-0670
Elizabeth, NJ 07208
(908) 352-0670
Gr: 9-12 | 127 students Avg. class size: 45 students Tuition & acceptance rate listed
Hinder Them Not Montessori School (Closed 2015)
Montessori School (Christian)
225 N 8th St
Kenilworth, NJ 07033
(908) 276-7750
Kenilworth, NJ 07033
(908) 276-7750
Gr: PK-K | 20 students
Holy Spirit School (Closed 2024)
(Catholic)
970 Suburban Road
Union, NJ 07083
(908) 687-8415
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
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
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
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
Plainfield, NJ 07060
(908) 755-8430
Gr: PK-2 | 51 students
227 Center St
Elizabeth, NJ 07202
(908) 352-7419
Elizabeth, NJ 07202
(908) 352-7419
Gr: PK-8 | 167 students
1003 N Broad Street
Elizabeth, NJ 07208
(908) 352-8029
Elizabeth, NJ 07208
(908) 352-8029
Gr: K-8 | 177 students
St. Genevieve School (Closed 2015)
(Catholic)
209 Princeton Rd
Elizabeth, NJ 07208
(908) 355-3355
Elizabeth, NJ 07208
(908) 355-3355
Gr: PK-8 | 210 students
41 S Springfield Ave
Springfield, NJ 07081
(973) 376-5194
Springfield, NJ 07081
(973) 376-5194
Gr: PK-8 | 159 students
101 Westervelt Avenue
Plainfield, NJ 07060
(908) 756-9539
Plainfield, NJ 07060
(908) 756-9539
Gr: K-8 | 155 students
237 S Broad St
Elizabeth, NJ 07202
(908) 352-4350
Elizabeth, NJ 07202
(908) 352-4350
Gr: 9-12 | 184 students Tuition listed
Shim Academy Of Montessori (Closed 2015)
Montessori School
1305 Saint George Ave
Roselle, NJ 07203
(908) 620-0404
Roselle, NJ 07203
(908) 620-0404
Gr: K-4 | 28 students
Frequently Asked Questions
What are the top ranked private high schools in Union County, NJ?
The top ranked private high schools in Union County, NJ include Oak Knoll School Of The Holy Child, Kent Place School, and Oratory Preparatory School.
How many private high schools are located in Union County?
18 private high schools are located in Union County.
How much do private high schools cost in Union County?
The average tuition cost is $21,664, which is lower than the New Jersey private school average tuition cost of $22,975.
How diverse are private high schools in Union County?
Union County private high schools are approximately 45% minority students, which is higher than the New Jersey private school average of 39%.
What percentage of private high schools are religiously affiliated in Union County?
Which private high schools in Union County are often viewed compared to one another?
Popular comparisons of private high schools in Union County include: Roselle Catholic High School vs. Union Catholic Regional High School, Union Catholic Regional High School vs. Roselle Catholic High School
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