#1 Private Schools with the Smallest Classes in Princeton, NJ
Princeton Friends School
Quaker (Friends) school · Grades Pre-K–8
4 students per teacher
Princeton, NJ
A+Overall grade82 students4 students per teacher
2026 lists
Private Schools with the Smallest Classes in Princeton, NJ
Private schools in Princeton, NJ with the fewest students per teacher (not counting preschools and special education schools). Top 10 of 10 schools.
#2 Private Schools with the Smallest Classes in Princeton, NJ
Stuart Country Day School of the Sacred Heart
Independent Catholic school · Grades Pre-K–12
4.2 students per teacher
Princeton, NJ
A+Overall gradeAll girls283 students4 students per teacher
#3 Private Schools with the Smallest Classes in Princeton, NJ
Chapin School
Independent school · Grades Pre-K–8
6 students per teacher
Princeton, NJ
A+Overall grade171 students6 students per teacher
#4 Private Schools with the Smallest Classes in Princeton, NJ
Princeton International SCHL of Math and Science
Independent school · Grades 9–12
6.2 students per teacher
Princeton, NJ
B+Overall grade120 students6 students per teacher
#5 Private Schools with the Smallest Classes in Princeton, NJ
Waldorf School of Princeton
Independent school · Grades Pre-K–8
6.5 students per teacher
Princeton, NJ
AOverall grade93 students7 students per teacher
#6 Private Schools with the Smallest Classes in Princeton, NJ
Princeton Day School
Independent school · Grades Pre-K–12
7.4 students per teacher
Princeton, NJ
A+Overall grade952 students7 students per teacher
#7 Private Schools with the Smallest Classes in Princeton, 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 Princeton, NJ
St. Paul School of Princeton
Parish school · Grades Pre-K–8
10.4 students per teacher
Princeton, NJ
A+Overall grade245 students10 students per teacher
#9 Private Schools with the Smallest Classes in Princeton, NJ
Princeton Montessori School
Montessori school · Grades Pre-K–8
11.6 students per teacher
Princeton, NJ
B+Overall grade93 students12 students per teacher
#10 Private Schools with the Smallest Classes in Princeton, 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.