#1 Fastest-Growing Private Schools in Oklahoma County, OK
Warm World School
Early childhood program · Grades Pre-K–K
Enrollment up 233% in about a decade
Oklahoma City, OK
143 students14 students per teacher
2026 lists
Fastest-Growing Private Schools in Oklahoma County, OK
Private schools in Oklahoma County, OK whose enrollment has grown the most over the past decade. Top 12 of 12 schools.
#2 Fastest-Growing Private Schools in Oklahoma County, OK
Positive Tomorrows
Independent school · Grades Pre-K–7
Enrollment up 227% in about a decade
Oklahoma City, OK
B+Overall grade108 students12 students per teacher
#3 Fastest-Growing Private Schools in Oklahoma County, OK
Holy Trinity Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
Enrollment up 183% in about a decade
Edmond, OK
B+Overall grade195 students9 students per teacher
#4 Fastest-Growing Private Schools in Oklahoma County, OK
Trinity School
Special education school · Grades 1–12
Enrollment up 148% in about a decade
Oklahoma City, OK
BOverall grade164 students7 students per teacher
#5 Fastest-Growing Private Schools in Oklahoma County, OK
Mercy School Institute
Islamic school · Grades Pre-K–12
Enrollment up 102% in about a decade
Edmond, OK
A+Overall grade393 students11 students per teacher
#6 Fastest-Growing Private Schools in Oklahoma County, OK
Crossings Christian School
Christian school (nondenominational) · Grades Pre-K–12
Enrollment up 56% in about a decade
Oklahoma City, OK
B+Overall grade1,050 students12 students per teacher
#7 Fastest-Growing Private Schools in Oklahoma County, OK
Young Achievers Christian Academy
Christian school (nondenominational) · Grades 1–8
Enrollment up 51% in about a decade
Oklahoma City, OK
B+Overall grade83 students6 students per teacher
#8 Fastest-Growing Private Schools in Oklahoma County, OK
St. Marys Episcopal School
Episcopal school · Grades Pre-K–5
Enrollment up 48% in about a decade
Edmond, OK
A+Overall grade172 students5 students per teacher
#9 Fastest-Growing Private Schools in Oklahoma County, OK
Oklahoma Christian School
Christian school (nondenominational) · Grades Pre-K–12
Enrollment up 28% in about a decade
Edmond, OK
BOverall grade1,111 students13 students per teacher
#10 Fastest-Growing Private Schools in Oklahoma County, OK
Casady School
Episcopal school · Grades Pre-K–12
Enrollment up 18% in about a decade
Oklahoma City, OK
A+Overall grade922 students8 students per teacher
#11 Fastest-Growing Private Schools in Oklahoma County, OK
Bishop John Carroll School
Diocesan school · Grades Pre-K–8
Enrollment up 17% in about a decade
Oklahoma City, OK
B+Overall grade203 students13 students per teacher
#12 Fastest-Growing Private Schools in Oklahoma County, OK
Westminster School
Independent school · Grades Pre-K–8
Enrollment up 15% in about a decade
Oklahoma City, OK
BOverall grade511 students9 students per teacher
From official public records, updated October 2026.