#1 Fastest-Growing Private Schools in Orange County, CA
Fairmont Private School
Independent school · Grades Pre-K–12
Enrollment up 345% in about a decade
Anaheim, CA
B+Overall grade2,391 students11 students per teacher
2026 lists
Fastest-Growing Private Schools in Orange County, CA
Private schools in Orange County, CA whose enrollment has grown the most over the past decade. Top 30 of 30 schools.
#2 Fastest-Growing Private Schools in Orange County, CA
Pacific Academy
Independent school · Grades K–12
Enrollment up 219% in about a decade
Irvine, CA
B+Overall grade223 students9 students per teacher
#3 Fastest-Growing Private Schools in Orange County, CA
Covenant Christian School
Christian school (nondenominational) · Grades Pre-K–8
Enrollment up 153% in about a decade
Orange, CA
AOverall grade197 students14 students per teacher
#4 Fastest-Growing Private Schools in Orange County, CA
New Horizon Elementary School - Irvine
Islamic school · Grades K–8
Enrollment up 128% in about a decade
Irvine, CA
A+Overall grade417 students11 students per teacher
#5 Fastest-Growing Private Schools in Orange County, CA
Speech & Language Development Center
Special education school · Grades K–12
Enrollment up 119% in about a decade
Buena Park, CA
B-Overall grade147 students10 students per teacher
#6 Fastest-Growing Private Schools in Orange County, CA
Crean Lutheran High School
Lutheran (Missouri Synod) school · Grades 9–12
Enrollment up 108% in about a decade
Irvine, CA
B+Overall grade1,092 students15 students per teacher
#7 Fastest-Growing Private Schools in Orange County, CA
Minaret Academy
Islamic school · Grades Pre-K–8
Enrollment up 99% in about a decade
Anaheim, CA
AOverall grade189 students5 students per teacher
#8 Fastest-Growing Private Schools in Orange County, CA
Christ Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
Enrollment up 85% in about a decade
Brea, CA
B+Overall grade229 students17 students per teacher
#9 Fastest-Growing Private Schools in Orange County, CA
Carden Conservatory
Independent school · Grades Pre-K–8
Enrollment up 73% in about a decade
Huntington Beach, CA
A+Overall grade83 students8 students per teacher
#10 Fastest-Growing Private Schools in Orange County, CA
St. Columban School
Parish school · Grades Pre-K–8
Enrollment up 63% in about a decade
Garden Grove, CA
B+Overall grade305 students19 students per teacher
#11 Fastest-Growing Private Schools in Orange County, CA
Ari Guiragos Minassian Armenian School
Independent school · Grades K–6
Enrollment up 62% in about a decade
Santa Ana, CA
BOverall grade94 students9 students per teacher
#12 Fastest-Growing Private Schools in Orange County, CA
The Islamic Education School
Islamic school · Grades K–8
Enrollment up 52% in about a decade
Anaheim, CA
B+Overall grade94 students7 students per teacher
#13 Fastest-Growing Private Schools in Orange County, CA
Grace Christian School
Christian school (nondenominational) · Grades Pre-K–8
Enrollment up 40% in about a decade
Cypress, CA
AOverall grade545 students12 students per teacher
#14 Fastest-Growing Private Schools in Orange County, CA
St. Francis of Assisi School
Diocesan school · Grades Pre-K–8
Enrollment up 38% in about a decade
Yorba Linda, CA
A+Overall grade527 students16 students per teacher
#15 Fastest-Growing Private Schools in Orange County, CA
Orange Crescent School
Islamic school · Grades Pre-K–11
Enrollment up 31% in about a decade
Garden Grove, CA
B+Overall grade352 students7 students per teacher
#16 Fastest-Growing Private Schools in Orange County, CA
TVT Community Day School
Jewish day school · Grades Pre-K–12
Enrollment up 30% in about a decade
Irvine, CA
A+Overall grade805 students9 students per teacher
#17 Fastest-Growing Private Schools in Orange County, CA
St. Mary's School
Christian school (nondenominational) · Grades Pre-K–8
Enrollment up 29% in about a decade
Aliso Viejo, CA
BOverall grade763 students14 students per teacher
#18 Fastest-Growing Private Schools in Orange County, CA
Calvary Chapel Academy
Christian school (nondenominational) · Grades Pre-K–8
Enrollment up 27% in about a decade
Yorba Linda, CA
B+Overall grade174 students17 students per teacher
#19 Fastest-Growing Private Schools in Orange County, CA
Jserra Catholic High School
Independent Catholic school · Grades 9–12
Enrollment up 26% in about a decade
San Juan Capistrano, CA
A+Overall grade1,317 students6 students per teacher
#20 Fastest-Growing Private Schools in Orange County, CA
Grace Lutheran School & Preschool
Lutheran school · Grades Pre-K–8
Enrollment up 24% in about a decade
Huntington Beach, CA
A+Overall grade262 students12 students per teacher
#21 Fastest-Growing Private Schools in Orange County, CA
Oakridge Private School
Christian school (nondenominational) · Grades Pre-K–8
Enrollment up 24% in about a decade
Orange, CA
A+Overall grade203 students10 students per teacher
#22 Fastest-Growing Private Schools in Orange County, CA
Heritage Oak Private Education
Independent school · Grades Pre-K–8
Enrollment up 23% in about a decade
Yorba Linda, CA
BOverall grade553 students14 students per teacher
#23 Fastest-Growing Private Schools in Orange County, CA
St. Anne School
Diocesan school · Grades Pre-K–8
Enrollment up 21% in about a decade
Santa Ana, CA
BOverall grade211 students18 students per teacher
#24 Fastest-Growing Private Schools in Orange County, CA
Liberty Christian School
Baptist school · Grades K–12
Enrollment up 18% in about a decade
Huntington Beach, CA
AOverall grade242 students11 students per teacher
From official public records, updated October 2026.