#1 Largest Private Schools in Pennsylvania
Milton Hershey School
Independent school · Grades Pre-K–12
1,951 students
Hershey, PA
B+Overall grade1,951 students8 students per teacher
2026 lists
Largest Private Schools in Pennsylvania
The private schools in Pennsylvania with the most students. Top 50 of 1,252 schools.
#2 Largest Private Schools in Pennsylvania
The Episcopal Academy
Episcopal school · Grades Pre-K–12
1,252 students
Newtown Square, PA
A+Overall grade1,252 students8 students per teacher
#3 Largest Private Schools in Pennsylvania
The Episcopal Academy
Episcopal school · Grades Pre-K–12
1,252 students
Newtown Square, PA
A+Overall grade1,252 students7 students per teacher
#4 Largest Private Schools in Pennsylvania
La Salle College High School
Independent Catholic school · Grades 9–12
1,158 students
Wyndmoor, PA
A+Overall gradeAll boys1,158 students11 students per teacher
#5 Largest Private Schools in Pennsylvania
Shady Side Academy
Independent school · Grades Pre-K–12
1,118 students
Pittsburgh, PA
B+Overall grade1,118 students21 students per teacher
#6 Largest Private Schools in Pennsylvania
Shady Side Academy
Independent school · Grades Pre-K–12
1,118 students
Pittsburgh, PA
A-Overall grade1,118 students8 students per teacher
#7 Largest Private Schools in Pennsylvania
Springside Chestnut Hill Academy
Independent school · Grades Pre-K–12
1,058 students
Philadelphia, PA
A+Overall grade1,058 students8 students per teacher
#8 Largest Private Schools in Pennsylvania
Springside Chestnut Hill Academy-Upper
Independent school · Grades Pre-K–12
1,058 students
Philadelphia, PA
B+Overall grade1,058 students8 students per teacher
#9 Largest Private Schools in Pennsylvania
St. Joseph's Preparatory School
Independent Catholic school · Grades 9–12
938 students
Philadelphia, PA
B+Overall gradeAll boys938 students13 students per teacher
#10 Largest Private Schools in Pennsylvania
Bishop Shanahan High School
Diocesan school · Grades 9–12
876 students
Downingtown, PA
BOverall grade876 students19 students per teacher
#11 Largest Private Schools in Pennsylvania
Archbishop Ryan High School
Diocesan school · Grades 9–12
870 students
Philadelphia, PA
BOverall grade870 students19 students per teacher
#12 Largest Private Schools in Pennsylvania
Moravian Academy
Brethren school · Grades Pre-K–12
836 students
Bethlehem, PA
A+Overall grade836 students6 students per teacher
#13 Largest Private Schools in Pennsylvania
Monsignor Bonner & Archbishop Prenderbast HS.
Diocesan school · Grades 9–12
804 students
Drexel Hill, PA
B-Overall grade804 students19 students per teacher
#14 Largest Private Schools in Pennsylvania
Friends Central School
Quaker (Friends) school · Grades Pre-K–12
791 students
Wynnewood, PA
A+Overall grade791 students9 students per teacher
#15 Largest Private Schools in Pennsylvania
Delaware County Christian School
Christian school (nondenominational) · Grades Pre-K–12
781 students
Newtown Square, PA
AOverall grade781 students10 students per teacher
#16 Largest Private Schools in Pennsylvania
Father Judge High School
Diocesan school · Grades 9–12
774 students
Philadelphia, PA
B-Overall gradeAll boys774 students20 students per teacher
#17 Largest Private Schools in Pennsylvania
Bishop McDevitt High School
Diocesan school · Grades 9–12
752 students
Harrisburg, PA
AOverall grade752 students13 students per teacher
#18 Largest Private Schools in Pennsylvania
Pope John Paul II High School
Diocesan school · Grades 9–12
742 students
Royersford, PA
BOverall grade742 students18 students per teacher
#19 Largest Private Schools in Pennsylvania
Archbishop Wood High School
Diocesan school · Grades 9–12
739 students
Warminster, PA
BOverall grade739 students19 students per teacher
#20 Largest Private Schools in Pennsylvania
Central Catholic High School
Diocesan school · Grades 9–12
712 students
Pittsburgh, PA
A+Overall gradeAll boys712 students12 students per teacher
#21 Largest Private Schools in Pennsylvania
Wyoming Seminary College Preparatory School
Independent school · Grades Pre-K–12
694 students
Kingston, PA
BOverall grade694 students7 students per teacher
#22 Largest Private Schools in Pennsylvania
Archbishop John Carroll High School
Diocesan school · Grades 9–12
686 students
Radnor, PA
B-Overall grade686 students19 students per teacher
#23 Largest Private Schools in Pennsylvania
Archbishop Carroll High School
Diocesan school · Grades 9–12
686 students
Malvern, PA
BOverall grade686 students18 students per teacher
#24 Largest Private Schools in Pennsylvania
Scranton Preparatory School
Independent Catholic school · Grades 9–12
683 students
Scranton, PA
B+Overall grade683 students15 students per teacher
From official public records, updated October 2026.