#1 Largest Private Schools in Delaware County, PA
The Episcopal Academy
Episcopal school · Grades Pre-K–12
1,252 students
Newtown Square, PA
A+Overall grade1,252 students8 students per teacher
2026 lists
Largest Private Schools in Delaware County, PA
The private schools in Delaware County, PA with the most students. Top 50 of 59 schools.
#2 Largest Private Schools in Delaware County, PA
The Episcopal Academy
Episcopal school · Grades Pre-K–12
1,252 students
Newtown Square, PA
A+Overall grade1,252 students7 students per teacher
#3 Largest Private Schools in Delaware County, PA
Monsignor Bonner & Archbishop Prenderbast HS.
Diocesan school · Grades 9–12
804 students
Drexel Hill, PA
B-Overall grade804 students19 students per teacher
#4 Largest Private Schools in Delaware County, PA
Delaware County Christian School
Christian school (nondenominational) · Grades Pre-K–12
781 students
Newtown Square, PA
AOverall grade781 students10 students per teacher
#5 Largest Private Schools in Delaware County, PA
Archbishop John Carroll High School
Diocesan school · Grades 9–12
686 students
Radnor, PA
B-Overall grade686 students19 students per teacher
#6 Largest Private Schools in Delaware County, PA
Archbishop Carroll High School
Diocesan school · Grades 9–12
686 students
Malvern, PA
BOverall grade686 students18 students per teacher
#7 Largest Private Schools in Delaware County, PA
The Agnes Irwin School
Independent school · Grades Pre-K–12
599 students
Bryn Mawr, PA
A+Overall gradeAll girls599 students7 students per teacher
#8 Largest Private Schools in Delaware County, PA
Academy-Notre Dame De Namur
Independent Catholic school · Grades 6–12
541 students
Villanova, PA
B+Overall gradeAll girls541 students9 students per teacher
#9 Largest Private Schools in Delaware County, PA
St. Anastasia School
Diocesan school · Grades K–8
514 students
Newtown Square, PA
B+Overall grade514 students12 students per teacher
#10 Largest Private Schools in Delaware County, PA
St. Katharine of Siena School
Diocesan school · Grades K–8
406 students
Wayne, PA
B-Overall grade406 students18 students per teacher
#11 Largest Private Schools in Delaware County, PA
Jack M Barrack Hebrew Academy
Jewish day school · Grades 6–12
360 students
Bryn Mawr, PA
A+Overall grade360 students7 students per teacher
#12 Largest Private Schools in Delaware County, PA
St. Andrew School
Parish school · Grades Pre-K–8
353 students
Drexel Hill, PA
B+Overall grade353 students16 students per teacher
#13 Largest Private Schools in Delaware County, PA
Sts. Colman-John Neumann
Parish school · Grades Pre-K–8
332 students
Bryn Mawr, PA
BOverall grade332 students12 students per teacher
#14 Largest Private Schools in Delaware County, PA
St. Piusx School
Diocesan school · Grades Pre-K–8
323 students
Broomall, PA
A+Overall grade323 students8 students per teacher
#15 Largest Private Schools in Delaware County, PA
St. Mary Magdalen School
Diocesan school · Grades K–8
307 students
Media, PA
B+Overall grade307 students11 students per teacher
#16 Largest Private Schools in Delaware County, PA
The Christian Academy
Calvinist school · Grades Pre-K–12
306 students
Brookhaven, PA
BOverall grade306 students14 students per teacher
#17 Largest Private Schools in Delaware County, PA
St. Bernadette School
Diocesan school · Grades Pre-K–8
288 students
Drexel Hill, PA
BOverall grade288 students19 students per teacher
#18 Largest Private Schools in Delaware County, PA
St. James Regional Catholic School
Diocesan school · Grades Pre-K–8
272 students
Ridley Park, PA
B-Overall grade272 students16 students per teacher
#19 Largest Private Schools in Delaware County, PA
Davidson School
Independent school · Grades Pre-K–12
269 students
Elwyn, PA
B+Overall grade269 students7 students per teacher
#20 Largest Private Schools in Delaware County, PA
Lifeworks School, at Media
Special education school · Grades 4–12
243 students
Media, PA
BOverall grade243 students5 students per teacher
#21 Largest Private Schools in Delaware County, PA
Holy Cross School
Parish school · Grades Pre-K–8
233 students
Springfield, PA
AOverall grade233 students12 students per teacher
#22 Largest Private Schools in Delaware County, PA
St. Francis of Assisi School
Parish school · Grades Pre-K–8
231 students
Springfield, PA
B+Overall grade231 students12 students per teacher
#23 Largest Private Schools in Delaware County, PA
Mother of Providence Regional Catholic School
Parish school · Grades Pre-K–8
203 students
Wallingford, PA
BOverall grade203 students14 students per teacher
#24 Largest Private Schools in Delaware County, PA
Sacred Heart Academy Bryn Mawr
Independent Catholic school · Grades K–12
190 students
Bryn Mawr, PA
A+Overall gradeAll girls190 students6 students per teacher
From official public records, updated October 2026.