#1 Largest Private Schools in Montgomery County, PA
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
2026 lists
Largest Private Schools in Montgomery County, PA
The private schools in Montgomery County, PA with the most students. Top 50 of 86 schools.
#2 Largest Private Schools in Montgomery County, PA
Friends Central School
Quaker (Friends) school · Grades Pre-K–12
791 students
Wynnewood, PA
A+Overall grade791 students9 students per teacher
#3 Largest Private Schools in Montgomery County, PA
Pope John Paul II High School
Diocesan school · Grades 9–12
742 students
Royersford, PA
BOverall grade742 students18 students per teacher
#4 Largest Private Schools in Montgomery County, PA
The Hill School
Independent school · Grades 9–12
539 students
Pottstown, PA
A+Overall grade539 students6 students per teacher
#5 Largest Private Schools in Montgomery County, PA
Dock Mennonite Academy
Mennonite school · Grades Pre-K–12
532 students
Souderton, PA
BOverall grade532 students11 students per teacher
#6 Largest Private Schools in Montgomery County, PA
Holy Cross Regional Catholic School
Diocesan school · Grades Pre-K–8
527 students
Collegeville, PA
B-Overall grade527 students17 students per teacher
#7 Largest Private Schools in Montgomery County, PA
Ancillae-Assumpta Academy
Independent Catholic school · Grades Pre-K–8
517 students
Wyncote, PA
A+Overall grade517 students10 students per teacher
#8 Largest Private Schools in Montgomery County, PA
Dock Mennonite Academy
Mennonite school · Grades Pre-K–12
516 students
Lansdale, PA
BOverall grade516 students12 students per teacher
#9 Largest Private Schools in Montgomery County, PA
St. Philip Neri
Parish school · Grades Pre-K–8
492 students
Lafayette Hill, PA
B-Overall grade492 students20 students per teacher
#10 Largest Private Schools in Montgomery County, PA
Mount St. Joseph Academy
Independent Catholic school · Grades 9–12
478 students
Flourtown, PA
A+Overall gradeAll girls478 students9 students per teacher
#11 Largest Private Schools in Montgomery County, PA
Coventry Christian Schools
Christian school (nondenominational) · Grades K–12
477 students
Pottstown, PA
BOverall grade477 students11 students per teacher
#12 Largest Private Schools in Montgomery County, PA
Gwynedd Mercy Academy High School
Independent Catholic school · Grades 9–12
439 students
Gwynedd Valley, PA
A+Overall gradeAll girls439 students9 students per teacher
#13 Largest Private Schools in Montgomery County, PA
Our Lady of Mercy Regional Catholic School
Diocesan school · Grades Pre-K–8
424 students
Maple Glen, PA
B-Overall grade424 students15 students per teacher
#14 Largest Private Schools in Montgomery County, PA
Mater Dei Catholic School
Parish school · Grades Pre-K–8
410 students
Lansdale, PA
B-Overall grade410 students17 students per teacher
#15 Largest Private Schools in Montgomery County, PA
Aim Academy
Special education school · Grades 1–12
406 students
Conshohocken, PA
A+Overall grade406 students5 students per teacher
#16 Largest Private Schools in Montgomery County, PA
Gwynedd-Mercy Academy Elementary
Independent Catholic school · Grades Pre-K–8
377 students
Spring House, PA
A+Overall grade377 students11 students per teacher
#17 Largest Private Schools in Montgomery County, PA
St. Helena School
Parish school · Grades Pre-K–8
374 students
Blue Bell, PA
B-Overall grade374 students16 students per teacher
#18 Largest Private Schools in Montgomery County, PA
Phil-Mont Christian Academy
Christian school (nondenominational) · Grades Pre-K–12
361 students
Erdenheim, PA
A-Overall grade361 students11 students per teacher
#19 Largest Private Schools in Montgomery County, PA
Visitation BVM School
Diocesan school · Grades Pre-K–8
348 students
Trooper, PA
B+Overall grade348 students13 students per teacher
#20 Largest Private Schools in Montgomery County, PA
Waldron Mercy Academy
Independent Catholic school · Grades Pre-K–8
348 students
Merion Station, PA
A+Overall grade348 students6 students per teacher
#21 Largest Private Schools in Montgomery County, PA
Perkiomen School
Independent school · Grades 6–12
343 students
Pennsburg, PA
AOverall grade343 students10 students per teacher
#22 Largest Private Schools in Montgomery County, PA
Corpus Christi School
Parish school · Grades Pre-K–8
336 students
Lansdale, PA
B+Overall grade336 students12 students per teacher
#23 Largest Private Schools in Montgomery County, PA
Caskey Torah Academy of Greater Philadelphia
Jewish day school · Grades Pre-K–8
307 students
Wynnewood, PA
BOverall grade307 students7 students per teacher
#24 Largest Private Schools in Montgomery County, PA
St. Teresa of Calcutta School
Diocesan school · Grades Pre-K–8
305 students
Schwenksville, PA
B-Overall grade305 students14 students per teacher
From official public records, updated October 2026.