#1 Largest Private Schools in San Diego, CA
Cathedral Catholic High School
Diocesan school · Grades 9–12
1,669 students
San Diego, CA
BOverall grade1,669 students17 students per teacher
2026 lists
Largest Private Schools in San Diego, CA
The private schools in San Diego, CA with the most students. Top 50 of 57 schools.
#2 Largest Private Schools in San Diego, CA
Francis W Parker School
Independent school · Grades Pre-K–12
1,280 students
San Diego, CA
BOverall grade1,280 students11 students per teacher
#3 Largest Private Schools in San Diego, CA
Francis Parker School
Independent school · Grades Pre-K–12
1,276 students
San Diego, CA
BOverall grade1,276 students11 students per teacher
#4 Largest Private Schools in San Diego, CA
Maranatha Christian Schools
Christian school (nondenominational) · Grades Pre-K–12
855 students
San Diego, CA
AOverall grade855 students13 students per teacher
#5 Largest Private Schools in San Diego, CA
Academy of Our Lady of Peace
Independent Catholic school · Grades 9–12
730 students
San Diego, CA
A+Overall gradeAll girls730 students18 students per teacher
#6 Largest Private Schools in San Diego, CA
St. Augustine High School
Independent Catholic school · Grades 9–12
729 students
San Diego, CA
A+Overall gradeAll boys729 students11 students per teacher
#7 Largest Private Schools in San Diego, CA
The Rock Academy
Christian school (nondenominational) · Grades Pre-K–12
466 students
San Diego, CA
A+Overall grade466 students11 students per teacher
#8 Largest Private Schools in San Diego, CA
Ocean View Christian Academy
Baptist school · Grades Pre-K–12
432 students
San Diego, CA
BOverall grade432 students18 students per teacher
#9 Largest Private Schools in San Diego, CA
Human Factor Leadership Academy
Christian school (nondenominational) · Grades Pre-K–12
396 students
San Diego, CA
B-Overall grade396 students26 students per teacher
#10 Largest Private Schools in San Diego, CA
Bright Horizon Academy
Islamic school · Grades Pre-K–12
322 students
San Diego, CA
AOverall grade322 students11 students per teacher
#11 Largest Private Schools in San Diego, CA
Bright Horizon Academy
Islamic school · Grades K–12
304 students
San Diego, CA
B+Overall grade304 students10 students per teacher
#12 Largest Private Schools in San Diego, CA
St. Therese Academy
Diocesan school · Grades K–8
302 students
San Diego, CA
A+Overall grade302 students8 students per teacher
#13 Largest Private Schools in San Diego, CA
Nazareth School San Diego
Independent Catholic school · Grades Pre-K–8
259 students
San Diego, CA
A-Overall grade259 students17 students per teacher
#14 Largest Private Schools in San Diego, CA
The Waldorf School of San Diego
Independent school · Grades Pre-K–12
251 students
San Diego, CA
A+Overall grade251 students8 students per teacher
#15 Largest Private Schools in San Diego, CA
Good Shepherd Catholic School
Parish school · Grades Pre-K–8
229 students
San Diego, CA
A+Overall grade229 students17 students per teacher
#16 Largest Private Schools in San Diego, CA
Warren-Walker Middle School
Independent school · Grades K–8
222 students
San Diego, CA
B-Overall grade222 students15 students per teacher
#17 Largest Private Schools in San Diego, CA
Notre Dame Academy
Diocesan school · Grades Pre-K–8
221 students
San Diego, CA
A+Overall grade221 students12 students per teacher
#18 Largest Private Schools in San Diego, CA
St. Vincent De Paul Elementary School
Parish school · Grades Pre-K–8
217 students
San Diego, CA
A+Overall grade217 students15 students per teacher
#19 Largest Private Schools in San Diego, CA
St. Charles Borromeo Academy
Diocesan school · Grades K–8
213 students
San Diego, CA
B+Overall grade213 students15 students per teacher
#20 Largest Private Schools in San Diego, CA
St. Columba School
Parish school · Grades Pre-K–8
211 students
San Diego, CA
A-Overall grade211 students19 students per teacher
#21 Largest Private Schools in San Diego, CA
Childrens Creative/Performing Arts Acad San Diego
Independent school · Grades Pre-K–12
186 students
San Diego, CA
BOverall grade186 students11 students per teacher
#22 Largest Private Schools in San Diego, CA
St. Gregory the Great Catholic School
Diocesan school · Grades K–8
185 students
San Diego, CA
BOverall grade185 students19 students per teacher
#23 Largest Private Schools in San Diego, CA
Our Ladys School
Parish school · Grades Pre-K–8
183 students
San Diego, CA
AOverall grade183 students15 students per teacher
#24 Largest Private Schools in San Diego, CA
St. Charles Catholic School
Diocesan school · Grades K–8
182 students
San Diego, CA
B+Overall grade182 students19 students per teacher
From official public records, updated October 2026.