#25 Largest Private Schools in Pennsylvania
North Catholic High School
Diocesan school · Grades 9–12
681 students
Cranberry Township, PA
BOverall grade681 students13 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.
#26 Largest Private Schools in Pennsylvania
Westtown School
Quaker (Friends) school · Grades Pre-K–12
676 students
West Chester, PA
A+Overall grade676 students6 students per teacher
#27 Largest Private Schools in Pennsylvania
Shalom Christian Academy
Brethren school · Grades Pre-K–12
671 students
Chambersburg, PA
BOverall grade671 students15 students per teacher
#28 Largest Private Schools in Pennsylvania
Conwell Egan Catholic High School
Diocesan school · Grades 9–12
670 students
Fairless Hills, PA
BOverall grade670 students19 students per teacher
#29 Largest Private Schools in Pennsylvania
Malvern Preparatory School
Independent Catholic school · Grades 6–12
665 students
Malvern, PA
A-Overall gradeAll boys665 students9 students per teacher
#30 Largest Private Schools in Pennsylvania
Cathedral Preparatory School
Diocesan school · Grades 9–12
665 students
Erie, PA
A+Overall grade665 students12 students per teacher
#31 Largest Private Schools in Pennsylvania
Mount Calvary Christian School
Christian school (nondenominational) · Grades K–12
657 students
Elizabethtown, PA
B-Overall grade657 students11 students per teacher
#32 Largest Private Schools in Pennsylvania
Winchester Thurston School
Independent school · Grades Pre-K–12
645 students
Allison Park, PA
A+Overall grade645 students9 students per teacher
#33 Largest Private Schools in Pennsylvania
Eden Christian Academy
Christian school (nondenominational) · Grades K–12
643 students
Pittsburgh, PA
BOverall grade643 students11 students per teacher
#34 Largest Private Schools in Pennsylvania
Allentow Central Catholic High School.
Diocesan school · Grades 9–12
627 students
Allentown, PA
AOverall grade627 students13 students per teacher
#35 Largest Private Schools in Pennsylvania
Berks Catholic High School
Diocesan school · Grades 9–12
613 students
Reading, PA
BOverall grade613 students17 students per teacher
#36 Largest Private Schools in Pennsylvania
St. Kilian Catholic School
Diocesan school · Grades Pre-K–8
612 students
Cranberry Township, PA
BOverall grade612 students14 students per teacher
#37 Largest Private Schools in Pennsylvania
Our Lady of Calvary School
Diocesan school · Grades Pre-K–8
610 students
Philadelphia, PA
B-Overall grade610 students17 students per teacher
#38 Largest Private Schools in Pennsylvania
The Agnes Irwin School
Independent school · Grades Pre-K–12
599 students
Bryn Mawr, PA
A+Overall gradeAll girls599 students7 students per teacher
#39 Largest Private Schools in Pennsylvania
St. Andrew School
Parish school · Grades Pre-K–8
585 students
Newtown, PA
B-Overall grade585 students17 students per teacher
#40 Largest Private Schools in Pennsylvania
Faith Christian Academy
Christian school (nondenominational) · Grades 6–12
582 students
Quakertown, PA
B-Overall grade582 students12 students per teacher
#41 Largest Private Schools in Pennsylvania
Sts. John Neumann & Maria Garetti Catholic High SCH
Diocesan school · Grades 9–12
578 students
Philadelphia, PA
B-Overall grade578 students23 students per teacher
#42 Largest Private Schools in Pennsylvania
West Shore Christian Academy
Christian school (nondenominational) · Grades K–12
560 students
Shiremanstown, PA
B-Overall grade560 students
#43 Largest Private Schools in Pennsylvania
Lancaster Country Day School
Independent school · Grades Pre-K–12
558 students
Lancaster, PA
A+Overall grade558 students7 students per teacher
#44 Largest Private Schools in Pennsylvania
Cristo Rey Philadelphia High School
Independent Catholic school · Grades 9–12
545 students
Philadelphia, PA
BOverall grade545 students18 students per teacher
#45 Largest Private Schools in Pennsylvania
Notre Dame High School
Diocesan school · Grades 9–12
543 students
Easton, PA
B+Overall grade543 students13 students per teacher
#46 Largest Private Schools in Pennsylvania
Academy-Notre Dame De Namur
Independent Catholic school · Grades 6–12
541 students
Villanova, PA
B+Overall gradeAll girls541 students9 students per teacher
#47 Largest Private Schools in Pennsylvania
Notre Dame High School
Diocesan school · Grades 9–12
539 students
Easton, PA
BOverall grade539 students15 students per teacher
#48 Largest Private Schools in Pennsylvania
The Hill School
Independent school · Grades 9–12
539 students
Pottstown, PA
A+Overall grade539 students6 students per teacher
From official public records, updated October 2026.