#1 Largest Private Schools in Franklin County, OH
The Columbus Academy
Independent school · Grades Pre-K–12
1,083 students
Gahanna, OH
AOverall grade1,083 students9 students per teacher
2026 lists
Largest Private Schools in Franklin County, OH
The private schools in Franklin County, OH with the most students. Top 50 of 69 schools.
#2 Largest Private Schools in Franklin County, OH
Worthington Christian School
Religious school · Grades K–12
1,038 students
Worthington, OH
A-Overall grade1,038 students15 students per teacher
#3 Largest Private Schools in Franklin County, OH
St. Francis De Sales High School
Diocesan school · Grades 9–12
866 students
Columbus, OH
A+Overall grade866 students12 students per teacher
#4 Largest Private Schools in Franklin County, OH
Bishop Watterson High
Diocesan school · Grades 9–12
864 students
Columbus, OH
A+Overall grade864 students11 students per teacher
#5 Largest Private Schools in Franklin County, OH
Grove City Christian School
Church of the Nazarene school · Grades K–12
835 students
Grove City, OH
B-Overall grade835 students15 students per teacher
#6 Largest Private Schools in Franklin County, OH
Harvest Preparatory School
Christian school (nondenominational) · Grades Pre-K–12
769 students
Canal Winchester, OH
BOverall grade769 students14 students per teacher
#7 Largest Private Schools in Franklin County, OH
Bishop Hartley High School
Diocesan school · Grades 9–12
697 students
Columbus, OH
A+Overall grade697 students13 students per teacher
#8 Largest Private Schools in Franklin County, OH
St. Brigid of Kildare Elementary School
Diocesan school · Grades Pre-K–8
573 students
Dublin, OH
BOverall grade573 students16 students per teacher
#9 Largest Private Schools in Franklin County, OH
St. Matthew the Apostle Catholic School
Parish school · Grades Pre-K–8
560 students
Gahanna, OH
B+Overall grade560 students14 students per teacher
#10 Largest Private Schools in Franklin County, OH
Worthington Christian School, Upper
Christian school (nondenominational) · Grades 7–12
548 students
Westerville, OH
B-Overall grade548 students15 students per teacher
#11 Largest Private Schools in Franklin County, OH
Madison Christian School
Christian school (nondenominational) · Grades Pre-K–12
478 students
Groveport, OH
A+Overall grade478 students8 students per teacher
#12 Largest Private Schools in Franklin County, OH
Columbus School for Girls
Independent school · Grades Pre-K–12
460 students
Columbus, OH
A+Overall gradeAll girls460 students7 students per teacher
#13 Largest Private Schools in Franklin County, OH
St. Andrew School
Diocesan school · Grades Pre-K–8
436 students
Columbus, OH
BOverall grade436 students13 students per teacher
#14 Largest Private Schools in Franklin County, OH
Tree of Life Christian Schools
Christian school (nondenominational) · Grades 6–12
434 students
Columbus, OH
BOverall grade434 students15 students per teacher
#15 Largest Private Schools in Franklin County, OH
Cristo Rey Columbus High School
Independent Catholic school · Grades 9–12
432 students
Columbus, OH
AOverall grade432 students14 students per teacher
#16 Largest Private Schools in Franklin County, OH
Tree of Life Christian Schools
Christian school (nondenominational) · Grades 6–12
431 students
Columbus, OH
B-Overall grade431 students14 students per teacher
#17 Largest Private Schools in Franklin County, OH
All Saints Academy
Parish school · Grades Pre-K–8
409 students
Columbus, OH
B+Overall grade409 students16 students per teacher
#18 Largest Private Schools in Franklin County, OH
Our Lady of Perpetual Help School
Diocesan school · Grades Pre-K–8
404 students
Grove City, OH
BOverall grade404 students21 students per teacher
#19 Largest Private Schools in Franklin County, OH
Immaculate Conception School
Diocesan school · Grades Pre-K–8
385 students
Columbus, OH
BOverall grade385 students16 students per teacher
#20 Largest Private Schools in Franklin County, OH
St. Michael School
Parish school · Grades Pre-K–8
349 students
Worthington, OH
BOverall grade349 students15 students per teacher
#21 Largest Private Schools in Franklin County, OH
Grace Christian School
Christian school (nondenominational) · Grades Pre-K–8
349 students
Blacklick, OH
A+Overall grade349 students9 students per teacher
#22 Largest Private Schools in Franklin County, OH
St. Mary School
Diocesan school · Grades Pre-K–8
348 students
Columbus, OH
A+Overall grade348 students10 students per teacher
#23 Largest Private Schools in Franklin County, OH
Cypress Christian School
Methodist school · Grades K–8
343 students
Galloway, OH
AOverall grade343 students10 students per teacher
#24 Largest Private Schools in Franklin County, OH
St. Cecilia Elementary School
Parish school · Grades Pre-K–8
291 students
Columbus, OH
A+Overall grade291 students14 students per teacher
From official public records, updated October 2026.