#1 Best Private High Schools in Middlesex County, NJ
Timothy Christian School
Christian school (nondenominational) · Grades K–12
The only Christian school in Piscataway
Piscataway, NJ
A+Overall grade452 students10 students per teacher
2026 lists
Best Private High Schools in Middlesex County, NJ
Private high schools in Middlesex County, NJ with the highest overall grades. Top 8 of 8 schools.
#2 Best Private High Schools in Middlesex County, NJ
Noor-Ul-Iman School
Islamic school · Grades Pre-K–12
The largest of 21 private schools in New Jersey
Monmouth Junction, NJ
A+Overall grade527 students7 students per teacher
#3 Best Private High Schools in Middlesex County, NJ
Wardlaw-Hartridge School
Independent school · Grades Pre-K–12
100% of graduates go to four-year colleges
Edison, NJ
A+Overall grade435 students7 students per teacher
#4 Best Private High Schools in Middlesex County, NJ
Overlake Preparatory Academy
Independent school · Grades 7–12
100% of graduates go to four-year colleges
Edison, NJ
A+Overall grade96 students6 students per teacher
#5 Best Private High Schools in Middlesex County, NJ
St. Joseph High School
Independent Catholic school · Grades 9–12
The only all-boys school in Metuchen
Metuchen, NJ
AOverall gradeAll boys571 students13 students per teacher
#6 Best Private High Schools in Middlesex County, NJ
Calvary Christian School
Christian school (nondenominational) · Grades Pre-K–12
The only Christian school in Old Bridge
Old Bridge, NJ
AOverall grade288 students9 students per teacher
#7 Best Private High Schools in Middlesex County, NJ
Wilberforce School
Christian school (nondenominational) · Grades Pre-K–12
100% of graduates go to four-year colleges
Princeton, NJ
B+Overall grade344 students18 students per teacher
#8 Best Private High Schools in Middlesex County, NJ
Rabbi Jacob Joseph School
Jewish day school · Grades 9–12
The only all-boys school in Edison
Edison, NJ
B-Overall gradeAll boys118 students18 students per teacher
Grades compare each school's official facts, such as class size, how long it has served families and where graduates go, with similar schools. They're a starting point: visit, ask questions and trust what you see.