#1 College-Bound Private High Schools in Union County, NJ
Kent Place School
Independent school · Grades Pre-K–12
100% of graduates go to four-year colleges
Summit, NJ
A+Overall gradeAll girls636 students7 students per teacher
2026 lists
College-Bound Private High Schools in Union County, NJ
Private high schools in Union County, NJ where the most graduates go on to four-year colleges. Top 9 of 9 schools.
#2 College-Bound Private High Schools in Union County, NJ
Union Catholic Regional High School
Diocesan school · Grades 9–12
100% of graduates go to four-year colleges
Scotch Plains, NJ
A+Overall grade530 students10 students per teacher
#3 College-Bound Private High Schools in Union County, NJ
Oak Knoll School of the Holy Child
Independent Catholic school · Grades Pre-K–12
100% of graduates go to four-year colleges
Summit, NJ
A+Overall grade498 students6 students per teacher
#4 College-Bound Private High Schools in Union County, NJ
Rav Teitz Mesivta Academy (Jec High School)
Jewish day school · Grades 6–12
100% of graduates go to four-year colleges
Elizabeth, NJ
B-Overall gradeAll boys210 students14 students per teacher
#5 College-Bound Private High Schools in Union County, NJ
Flexschool
Independent school · Grades K–12
100% of graduates go to four-year colleges
Berkeley Heights, NJ
A+Overall grade98 students3 students per teacher
#6 College-Bound Private High Schools in Union County, NJ
Oratory Prep School
Independent Catholic school · Grades 7–12
99% of graduates go to four-year colleges
Summit, NJ
A+Overall gradeAll boys363 students9 students per teacher
#7 College-Bound Private High Schools in Union County, NJ
Bruriah High School for Girls
Jewish day school · Grades 6–12
98% of graduates go to four-year colleges
Elizabeth, NJ
A+Overall gradeAll girls213 students4 students per teacher
#8 College-Bound Private High Schools in Union County, NJ
Mother Seton Regional High School
Diocesan school · Grades 9–12
96% of graduates go to four-year colleges
Clark, NJ
A+Overall gradeAll girls181 students8 students per teacher
#9 College-Bound Private High Schools in Union County, NJ
Cornerstone Day School
Special education school · Grades 6–12
85% of graduates go to four-year colleges
Cranford, NJ
B+Overall grade125 students7 students per teacher
From official public records, updated October 2026.