#1 Most Diverse Private Schools in Essex County, NJ
Lacordaire Academy
Independent Catholic school · Grades Pre-K–12
Largest group: 35% of students
Upper Montclair, NJ
A+Overall grade255 students8 students per teacher
2026 lists
Most Diverse Private Schools in Essex County, NJ
Private schools in Essex County, NJ with the most varied mix of students. Top 38 of 38 schools.
#2 Most Diverse Private Schools in Essex County, NJ
Essex Valley School
Special education school · Grades 6–12
Largest group: 39% of students
West Caldwell, NJ
A+Overall grade103 students4 students per teacher
#3 Most Diverse Private Schools in Essex County, NJ
Abundant Life Academy
Pentecostal school · Grades Pre-K–12
Largest group: 41% of students
Nutley, NJ
B+Overall grade367 students14 students per teacher
#4 Most Diverse Private Schools in Essex County, NJ
New Beginnings
Special education school · Grades Pre-K–12
Largest group: 42% of students
Fairfield, NJ
BOverall grade160 students8 students per teacher
#5 Most Diverse Private Schools in Essex County, NJ
The Phoenix Center
Special education school · Ungraded
Largest group: 42% of students
Nutley, NJ
A-Overall grade135 students7 students per teacher
#6 Most Diverse Private Schools in Essex County, NJ
Our Lady of Sorrows School
Diocesan school · Grades Pre-K–8
Largest group: 44% of students
South Orange, NJ
A+Overall grade184 students8 students per teacher
#7 Most Diverse Private Schools in Essex County, NJ
Far Brook School
Independent school · Grades Pre-K–8
Largest group: 45% of students
Short Hills, NJ
A+Overall grade198 students5 students per teacher
#8 Most Diverse Private Schools in Essex County, NJ
Maarif School
Islamic school · Grades Pre-K–12
Largest group: 47% of students
Bloomfield, NJ
AOverall grade199 students8 students per teacher
#9 Most Diverse Private Schools in Essex County, NJ
St. Cassian Elementary School
Diocesan school · Grades Pre-K–8
Largest group: 48% of students
Upper Montclair, NJ
A+Overall grade207 students9 students per teacher
#10 Most Diverse Private Schools in Essex County, NJ
Our Lady of the Lake School
Diocesan school · Grades Pre-K–8
Largest group: 49% of students
Verona, NJ
A+Overall grade148 students11 students per teacher
#11 Most Diverse Private Schools in Essex County, NJ
Alif Muhammad Nia School
Independent school · Grades 8–12
Largest group: 50% of students
Newark, NJ
BOverall grade100 students33 students per teacher
#12 Most Diverse Private Schools in Essex County, NJ
St. Rose of Lima Academy
Diocesan school · Grades Pre-K–8
Largest group: 51% of students
Short Hills, NJ
AOverall grade152 students12 students per teacher
#13 Most Diverse Private Schools in Essex County, NJ
St. Thomas the Apostle School
Diocesan school · Grades Pre-K–8
Largest group: 52% of students
Bloomfield, NJ
A+Overall grade163 students8 students per teacher
#14 Most Diverse Private Schools in Essex County, NJ
Sawtelle Learning Center
Special education school · Ungraded
Largest group: 52% of students
Montclair, NJ
B+Overall grade65 students13 students per teacher
#15 Most Diverse Private Schools in Essex County, NJ
Montclair Cooperative School
Independent school · Grades Pre-K–8
Largest group: 53% of students
Montclair, NJ
AOverall grade104 students7 students per teacher
#16 Most Diverse Private Schools in Essex County, NJ
Westbridge Academy
Special education school · Grades 1–12
Largest group: 53% of students
Bloomfield, NJ
AOverall grade60 students5 students per teacher
#17 Most Diverse Private Schools in Essex County, NJ
St. Benedict's Prep
Independent Catholic school · Grades K–12
Largest group: 54% of students
Newark, NJ
B+Overall grade965 students13 students per teacher
#18 Most Diverse Private Schools in Essex County, NJ
Pillar High School (Former Horizon High School)
Special education school · Grades 8–12
Largest group: 55% of students
Livingston, NJ
BOverall grade82 students8 students per teacher
#19 Most Diverse Private Schools in Essex County, NJ
Aquinas Academy
Diocesan school · Grades K–8
Largest group: 56% of students
Livingston, NJ
A+Overall grade165 students9 students per teacher
#20 Most Diverse Private Schools in Essex County, NJ
The Montclair Kimberley Academy
Independent school · Grades Pre-K–12
Largest group: 57% of students
Montclair, NJ
A+Overall grade1,034 students6 students per teacher
#21 Most Diverse Private Schools in Essex County, NJ
St. Catherine of Siena School
Diocesan school · Grades Pre-K–8
Largest group: 59% of students
Cedar Grove, NJ
A-Overall grade180 students13 students per teacher
#22 Most Diverse Private Schools in Essex County, NJ
Seton Hall Preparatory School
Diocesan school · Grades 9–12
Largest group: 61% of students
West Orange, NJ
A+Overall gradeAll boys981 students13 students per teacher
#23 Most Diverse Private Schools in Essex County, NJ
St. Vincent Academy
Independent Catholic school · Grades 9–12
Largest group: 62% of students
Newark, NJ
A+Overall gradeAll girls197 students9 students per teacher
#24 Most Diverse Private Schools in Essex County, NJ
Immaculate Conception High School
Independent Catholic school · Grades 9–12
Largest group: 68% of students
Montclair, NJ
B+Overall grade164 students11 students per teacher
From official public records, updated October 2026.