#1 Largest Private Schools in Oklahoma
Oklahoma Christian School
Christian school (nondenominational) · Grades Pre-K–12
1,111 students
Edmond, OK
BOverall grade1,111 students13 students per teacher
2026 lists
Largest Private Schools in Oklahoma
The private schools in Oklahoma with the most students. Top 50 of 118 schools.
#2 Largest Private Schools in Oklahoma
Crossings Christian School
Christian school (nondenominational) · Grades Pre-K–12
1,050 students
Oklahoma City, OK
B+Overall grade1,050 students12 students per teacher
#3 Largest Private Schools in Oklahoma
Metro Christian Academy
Christian school (nondenominational) · Grades Pre-K–12
1,040 students
Tulsa, OK
BOverall grade1,040 students12 students per teacher
#4 Largest Private Schools in Oklahoma
Lincoln Christian School
Christian school (nondenominational) · Grades Pre-K–12
937 students
Tulsa, OK
B+Overall grade937 students11 students per teacher
#5 Largest Private Schools in Oklahoma
Casady School
Episcopal school · Grades Pre-K–12
922 students
Oklahoma City, OK
A+Overall grade922 students8 students per teacher
#6 Largest Private Schools in Oklahoma
Bishop Kelley High School
Diocesan school · Grades 9–12
892 students
Tulsa, OK
B+Overall grade892 students14 students per teacher
#7 Largest Private Schools in Oklahoma
The Academy of Classical Christian Midtown Campus
Christian school (nondenominational) · Grades Pre-K–12
871 students
Oklahoma City, OK
B-Overall grade871 students13 students per teacher
#8 Largest Private Schools in Oklahoma
Heritage Hall
Independent school · Grades Pre-K–12
870 students
Oklahoma City, OK
A+Overall grade870 students8 students per teacher
#9 Largest Private Schools in Oklahoma
The Acad of Classical CHRN Studies
Christian school (nondenominational) · Grades Pre-K–12
862 students
Oklahoma City, OK
BOverall grade862 students16 students per teacher
#10 Largest Private Schools in Oklahoma
The Academy of Classical Christian Studies
Christian school (nondenominational) · Grades Pre-K–12
859 students
Oklahoma City, OK
B-Overall grade859 students13 students per teacher
#11 Largest Private Schools in Oklahoma
Bishop McGuinness Catholic High School
Diocesan school · Grades 9–12
751 students
Oklahoma City, OK
A+Overall grade751 students13 students per teacher
#12 Largest Private Schools in Oklahoma
Monte Cassino School
Independent Catholic school · Grades Pre-K–8
642 students
Tulsa, OK
A+Overall grade642 students8 students per teacher
#13 Largest Private Schools in Oklahoma
Christian Heritage Academy
Christian school (nondenominational) · Grades K–12
640 students
Del City, OK
B-Overall grade640 students15 students per teacher
#14 Largest Private Schools in Oklahoma
Summit Christian Academy
Assembly of God school · Grades Pre-K–12
638 students
Broken Arrow, OK
BOverall grade638 students13 students per teacher
#15 Largest Private Schools in Oklahoma
Summit Christian Academy
Assembly of God school · Grades Pre-K–12
627 students
Broken Arrow, OK
B-Overall grade627 students12 students per teacher
#16 Largest Private Schools in Oklahoma
Oklahoma Christian Academy
Church of Christ school · Grades Pre-K–12
547 students
Edmond, OK
BOverall grade547 students9 students per teacher
#17 Largest Private Schools in Oklahoma
Cascia Hall Preparatory School
Independent Catholic school · Grades 6–12
544 students
Tulsa, OK
A+Overall grade544 students10 students per teacher
#18 Largest Private Schools in Oklahoma
Westminster School
Independent school · Grades Pre-K–8
511 students
Oklahoma City, OK
BOverall grade511 students9 students per teacher
#19 Largest Private Schools in Oklahoma
Christ the King Catholic School
Diocesan school · Grades Pre-K–8
436 students
Oklahoma City, OK
B-Overall grade436 students15 students per teacher
#20 Largest Private Schools in Oklahoma
Riverfield Country Day School
Independent school · Grades Pre-K–12
422 students
Tulsa, OK
AOverall grade422 students8 students per teacher
#21 Largest Private Schools in Oklahoma
Marquette Catholic School
Parish school · Grades Pre-K–8
400 students
Tulsa, OK
B-Overall grade400 students16 students per teacher
#22 Largest Private Schools in Oklahoma
Mercy School Institute
Islamic school · Grades Pre-K–12
393 students
Edmond, OK
A+Overall grade393 students11 students per teacher
#23 Largest Private Schools in Oklahoma
Mount Saint Mary Catholic High School
Diocesan school · Grades 9–12
389 students
Oklahoma City, OK
A+Overall grade389 students9 students per teacher
#24 Largest Private Schools in Oklahoma
St. Elizabeth Ann Seton
Parish school · Grades Pre-K–8
363 students
Edmond, OK
B-Overall grade363 students12 students per teacher
From official public records, updated October 2026.