#1 Private Schools with the Smallest Classes in Middlesex County, NJ
Pillars Preparatory Academy
Islamic school · Grades Pre-K–12
5.4 students per teacher
South River, NJ
B+Overall grade289 students5 students per teacher
2026 lists
Private Schools with the Smallest Classes in Middlesex County, NJ
Private schools in Middlesex County, NJ with the fewest students per teacher (not counting preschools and special education schools). Top 26 of 26 schools.
#2 Private Schools with the Smallest Classes in Middlesex County, NJ
Rabbi Pesach Raymon Yeshiva
Jewish day school · Grades Pre-K–8
5.8 students per teacher
Edison, NJ
A-Overall grade231 students6 students per teacher
#3 Private Schools with the Smallest Classes in Middlesex County, NJ
Overlake Preparatory Academy
Independent school · Grades 7–12
6 students per teacher
Edison, NJ
A+Overall grade96 students6 students per teacher
#4 Private Schools with the Smallest Classes in Middlesex County, NJ
St. Joseph Elementary School
Diocesan school · Grades Pre-K–8
7 students per teacher
Carteret, NJ
A+Overall grade83 students7 students per teacher
#5 Private Schools with the Smallest Classes in Middlesex County, NJ
Noor-Ul-Iman School
Islamic school · Grades Pre-K–12
7.1 students per teacher
Monmouth Junction, NJ
A+Overall grade527 students7 students per teacher
#6 Private Schools with the Smallest Classes in Middlesex County, NJ
Wardlaw-Hartridge School
Independent school · Grades Pre-K–12
7.2 students per teacher
Edison, NJ
A+Overall grade435 students7 students per teacher
#7 Private Schools with the Smallest Classes in Middlesex County, NJ
French American School of Princeton
Independent school · Grades Pre-K–8
8 students per teacher
Princeton, NJ
A-Overall grade116 students8 students per teacher
#8 Private Schools with the Smallest Classes in Middlesex County, NJ
Darul Arqam School
Islamic school · Grades Pre-K–12
8.2 students per teacher
South River, NJ
A+Overall grade268 students8 students per teacher
#9 Private Schools with the Smallest Classes in Middlesex County, NJ
Immaculate Conception School
Diocesan school · Grades Pre-K–8
8.8 students per teacher
Spotswood, NJ
A+Overall grade98 students9 students per teacher
#10 Private Schools with the Smallest Classes in Middlesex County, NJ
Calvary Christian School
Christian school (nondenominational) · Grades Pre-K–12
8.9 students per teacher
Old Bridge, NJ
AOverall grade288 students9 students per teacher
#11 Private Schools with the Smallest Classes in Middlesex County, NJ
Holy Savior Academy
Diocesan school · Grades Pre-K–8
9.3 students per teacher
South Plainfield, NJ
A+Overall grade121 students9 students per teacher
#12 Private Schools with the Smallest Classes in Middlesex County, NJ
Timothy Christian School
Christian school (nondenominational) · Grades K–12
10.4 students per teacher
Piscataway, NJ
A+Overall grade452 students10 students per teacher
#13 Private Schools with the Smallest Classes in Middlesex County, NJ
St. James Elementary School
Diocesan school · Grades Pre-K–8
10.7 students per teacher
Woodbridge, NJ
AOverall grade131 students11 students per teacher
#14 Private Schools with the Smallest Classes in Middlesex County, NJ
St. Stanislaus Kostka School
Parish school · Grades Pre-K–8
10.9 students per teacher
Sayreville, NJ
AOverall grade137 students11 students per teacher
#15 Private Schools with the Smallest Classes in Middlesex County, NJ
St. Helena School
Parish school · Grades Pre-K–8
11.6 students per teacher
Edison, NJ
A+Overall grade162 students12 students per teacher
#16 Private Schools with the Smallest Classes in Middlesex County, NJ
St. John Vianney School
Diocesan school · Grades Pre-K–8
12.3 students per teacher
Colonia, NJ
B+Overall grade247 students12 students per teacher
#17 Private Schools with the Smallest Classes in Middlesex County, NJ
Yeshiva Shaarei Tzion Boys'
Jewish day school · Grades K–8
12.8 students per teacher
Piscataway, NJ
B-Overall gradeAll boys200 students13 students per teacher
#18 Private Schools with the Smallest Classes in Middlesex County, NJ
St. Joseph High School
Independent Catholic school · Grades 9–12
13.3 students per teacher
Metuchen, NJ
AOverall gradeAll boys571 students13 students per teacher
#19 Private Schools with the Smallest Classes in Middlesex County, NJ
St. Thomas the Apostle School
Diocesan school · Grades Pre-K–8
14.2 students per teacher
Old Bridge, NJ
BOverall grade326 students14 students per teacher
#20 Private Schools with the Smallest Classes in Middlesex County, NJ
Assumption Catholic School
Religious school · Grades Pre-K–8
14.5 students per teacher
Perth Amboy, NJ
A+Overall grade171 students15 students per teacher
#21 Private Schools with the Smallest Classes in Middlesex County, NJ
Metuchen Christian Academy
Assembly of God school · Grades K–8
15 students per teacher
Metuchen, NJ
BOverall grade135 students15 students per teacher
#22 Private Schools with the Smallest Classes in Middlesex County, NJ
Little Flower Montessori School
Montessori school · Grades Pre-K–2
15.3 students per teacher
Edison, NJ
BOverall grade92 students15 students per teacher
#23 Private Schools with the Smallest Classes in Middlesex County, NJ
St. Francis Cathedral School
Diocesan school · Grades Pre-K–8
15.8 students per teacher
Metuchen, NJ
BOverall grade391 students16 students per teacher
#24 Private Schools with the Smallest Classes in Middlesex County, NJ
Wilberforce School
Christian school (nondenominational) · Grades Pre-K–12
18.1 students per teacher
Princeton, NJ
B+Overall grade344 students18 students per teacher
From official public records, updated October 2026.