#1 Largest Private Schools in Los Angeles County, CA
Chaminade College Preparatory-High School
Independent Catholic school · Grades 6–12
1,859 students
West Hills, CA
BOverall grade1,859 students26 students per teacher
2026 lists
Largest Private Schools in Los Angeles County, CA
The private schools in Los Angeles County, CA with the most students. Top 50 of 540 schools.
#2 Largest Private Schools in Los Angeles County, CA
Oaks Christian School
Christian school (nondenominational) · Grades 4–12
1,663 students
Westlake Village, CA
A+Overall grade1,663 students11 students per teacher
#3 Largest Private Schools in Los Angeles County, CA
Harvard-Westlake
Episcopal school · Grades 7–12
1,617 students
Los Angeles, CA
A+Overall grade1,617 students8 students per teacher
#4 Largest Private Schools in Los Angeles County, CA
Bridge Academy
Alternative school · Grades Pre-K–12
1,302 students
Los Angeles, CA
BOverall grade1,302 students11 students per teacher
#5 Largest Private Schools in Los Angeles County, CA
Notre Dame High School
Independent Catholic school · Grades 9–12
1,255 students
Sherman Oaks, CA
A+Overall grade1,255 students13 students per teacher
#6 Largest Private Schools in Los Angeles County, CA
Valley Christian Schools
Christian school (nondenominational) · Grades Pre-K–12
1,239 students
Cerritos, CA
AOverall grade1,239 students15 students per teacher
#7 Largest Private Schools in Los Angeles County, CA
Brentwood School
Independent school · Grades K–12
1,227 students
Los Angeles, CA
B+Overall grade1,227 students11 students per teacher
#8 Largest Private Schools in Los Angeles County, CA
Valley Christian School, System
Christian school (nondenominational) · Grades Pre-K–12
1,217 students
Cerritos, CA
BOverall grade1,217 students12 students per teacher
#9 Largest Private Schools in Los Angeles County, CA
Heritage Christian School
Christian school (nondenominational) · Grades Pre-K–12
1,162 students
Northridge, CA
BOverall grade1,162 students24 students per teacher
#10 Largest Private Schools in Los Angeles County, CA
Viewpoint School
Independent school · Grades Pre-K–12
1,156 students
Calabasas, CA
A+Overall grade1,156 students5 students per teacher
#11 Largest Private Schools in Los Angeles County, CA
Sierra Canyon School
Independent school · Grades Pre-K–12
1,139 students
Chatsworth, CA
B+Overall grade1,139 students9 students per teacher
#12 Largest Private Schools in Los Angeles County, CA
Sierra Canyon School
Independent school · Grades Pre-K–12
1,139 students
Chatsworth, CA
B+Overall grade1,139 students11 students per teacher
#13 Largest Private Schools in Los Angeles County, CA
International School of Los Angeles
Independent school · Grades K–12
1,090 students
Los Angeles, CA
BOverall grade1,090 students10 students per teacher
#14 Largest Private Schools in Los Angeles County, CA
Desert Christian Schools
Christian school (nondenominational) · Grades K–12
1,084 students
Lancaster, CA
B-Overall grade1,084 students22 students per teacher
#15 Largest Private Schools in Los Angeles County, CA
Bishop Amat Memorial High School
Diocesan school · Grades 9–12
1,023 students
La Puente, CA
BOverall grade1,023 students17 students per teacher
#16 Largest Private Schools in Los Angeles County, CA
Polytechnic School
Independent school · Grades K–12
874 students
Pasadena, CA
A+Overall grade874 students7 students per teacher
#17 Largest Private Schools in Los Angeles County, CA
Bishop Montgomery High
Diocesan school · Grades 9–12
869 students
Torrance, CA
BOverall grade869 students18 students per teacher
#18 Largest Private Schools in Los Angeles County, CA
Rose & Alex Pilibos Armenian School
Christian school (nondenominational) · Grades K–12
865 students
Los Angeles, CA
BOverall grade865 students10 students per teacher
#19 Largest Private Schools in Los Angeles County, CA
Agbu Manoogian-Demirdjian School
Religious school · Grades Pre-K–12
800 students
Canoga Park, CA
BOverall grade800 students15 students per teacher
#20 Largest Private Schools in Los Angeles County, CA
St. John Bosco
Independent Catholic school · Grades 9–12
800 students
Bellflower, CA
A+Overall gradeAll boys800 students12 students per teacher
#21 Largest Private Schools in Los Angeles County, CA
Emek Hebrew Academy
Jewish day school · Grades Pre-K–8
789 students
Sherman Oaks, CA
B+Overall grade789 students18 students per teacher
#22 Largest Private Schools in Los Angeles County, CA
Wildwood School K-12
Independent school · Grades K–12
768 students
Los Angeles, CA
AOverall grade768 students8 students per teacher
#23 Largest Private Schools in Los Angeles County, CA
Milken Community School
Jewish day school · Grades 6–12
763 students
Los Angeles, CA
BOverall grade763 students8 students per teacher
#24 Largest Private Schools in Los Angeles County, CA
Milken Community Middle School
Jewish day school · Grades 6–12
763 students
Los Angeles, CA
BOverall grade763 students6 students per teacher
From official public records, updated October 2026.