#1 Largest Private Schools in Sussex County, NJ
Pope John Xxiii High School
Diocesan school · Grades 8–12
711 students
Sparta, NJ
B-Overall grade711 students14 students per teacher
2026 lists
Largest Private Schools in Sussex County, NJ
The private schools in Sussex County, NJ with the most students. Top 11 of 11 schools.
#2 Largest Private Schools in Sussex County, NJ
Rev George a Brown School
Diocesan school · Grades Pre-K–4
295 students
Sparta, NJ
A-Overall grade295 students12 students per teacher
#3 Largest Private Schools in Sussex County, NJ
Pope John Xxiii Middle School
Diocesan school · Grades 5–7
211 students
Sparta, NJ
BOverall grade211 students12 students per teacher
#4 Largest Private Schools in Sussex County, NJ
Northwest Christian School
Christian school (nondenominational) · Grades Pre-K–8
149 students
Newton, NJ
B-Overall grade149 students15 students per teacher
#5 Largest Private Schools in Sussex County, NJ
Sussex Christian School
Christian school (nondenominational) · Grades Pre-K–8
137 students
Sussex, NJ
A-Overall grade137 students11 students per teacher
#6 Largest Private Schools in Sussex County, NJ
Veritas Christian Academy
Christian school (nondenominational) · Grades 9–12
54 students
Sparta, NJ
A-Overall grade54 students7 students per teacher
#7 Largest Private Schools in Sussex County, NJ
Elite Prepartory Academy
Independent school · Grades 8–12
41 students
Hopatcong, NJ
B+Overall grade41 students4 students per teacher
#8 Largest Private Schools in Sussex County, NJ
Tranquility Adventist School
Seventh-day Adventist school · Grades Pre-K–8
30 students
Andover, NJ
A-Overall grade30 students10 students per teacher
#9 Largest Private Schools in Sussex County, NJ
Fields of Green Montessori School
Montessori school · Grades Pre-K–8
26 students
Vernon, NJ
A-Overall grade26 students8 students per teacher
#10 Largest Private Schools in Sussex County, NJ
Lakeland Andover School
Special education school · Grades 7–12
26 students
Newton, NJ
AOverall grade26 students2 students per teacher
#11 Largest Private Schools in Sussex County, NJ
Broadstep Academy
Special education school · Ungraded
22 students
Sparta, NJ
A-Overall grade22 students4 students per teacher
From official public records, updated October 2026.