#1 Largest Private Schools in Washington County, PA
Central Christian Academy
Assembly of God school · Grades Pre-K–11
286 students
Houston, PA
B-Overall grade286 students16 students per teacher
2026 lists
Largest Private Schools in Washington County, PA
The private schools in Washington County, PA with the most students. Top 9 of 9 schools.
#2 Largest Private Schools in Washington County, PA
John F Kennedy Catholic School
Diocesan school · Grades Pre-K–8
219 students
Washington, PA
BOverall grade219 students16 students per teacher
#3 Largest Private Schools in Washington County, PA
Tri-State Christian Academy
Christian school (nondenominational) · Grades K–12
115 students
Burgettstown, PA
B+Overall grade115 students9 students per teacher
#4 Largest Private Schools in Washington County, PA
Tri-State Christian Academy
Christian school (nondenominational) · Grades K–12
114 students
Burgettstown, PA
BOverall grade114 students8 students per teacher
#5 Largest Private Schools in Washington County, PA
Srces-Madonna Catholic Regional School
Diocesan school · Grades Pre-K–8
98 students
Monongahela, PA
A+Overall grade98 students10 students per teacher
#6 Largest Private Schools in Washington County, PA
Faith Christian School
Baptist school · Grades Pre-K–12
95 students
Washington, PA
B+Overall grade95 students10 students per teacher
#7 Largest Private Schools in Washington County, PA
Transformation Learning
Independent school · Grades K–12
89 students
Claysville, PA
B+Overall grade89 students11 students per teacher
#8 Largest Private Schools in Washington County, PA
Southwood School
Special education school · Grades 4–12
35 students
Canonsburg, PA
B+Overall gradeAll boys35 students12 students per teacher
#9 Largest Private Schools in Washington County, PA
Cornerstone Mennonite School
Mennonite school · Grades 1–12
33 students
Burgettstown, PA
AOverall grade33 students7 students per teacher
From official public records, updated October 2026.