#1 Largest Private Schools in Ventura County, CA
Grace Elementary School
Christian school (nondenominational) · Grades K–6
419 students
Simi Valley, CA
B+Overall grade419 students17 students per teacher
2026 lists
Largest Private Schools in Ventura County, CA
The private schools in Ventura County, CA with the most students. Top 49 of 49 schools.
#2 Largest Private Schools in Ventura County, CA
Hillcrest Christian School
Christian school (nondenominational) · Grades Pre-K–12
416 students
Thousand Oaks, CA
AOverall grade416 students11 students per teacher
#3 Largest Private Schools in Ventura County, CA
St. Bonaventure High School
Diocesan school · Grades 9–12
373 students
Ventura, CA
B+Overall grade373 students16 students per teacher
#4 Largest Private Schools in Ventura County, CA
Ojai Valley School
Independent school · Grades Pre-K–12
305 students
Ojai, CA
A+Overall grade305 students6 students per teacher
#5 Largest Private Schools in Ventura County, CA
St. Mary Magdalen School
Diocesan school · Grades K–8
294 students
Camarillo, CA
AOverall grade294 students19 students per teacher
#6 Largest Private Schools in Ventura County, CA
La Reina High School
Diocesan school · Grades 6–12
272 students
Thousand Oaks, CA
A+Overall gradeAll girls272 students10 students per teacher
#7 Largest Private Schools in Ventura County, CA
Villanova Preparatory School
Independent Catholic school · Grades 6–12
266 students
Ojai, CA
A+Overall grade266 students9 students per teacher
#8 Largest Private Schools in Ventura County, CA
Our Lady of the Assumption School
Independent Catholic school · Grades Pre-K–8
254 students
Ventura, CA
B+Overall grade254 students20 students per teacher
#9 Largest Private Schools in Ventura County, CA
The Thacher School
Independent school · Grades 9–12
252 students
Ojai, CA
A-Overall grade252 students6 students per teacher
#10 Largest Private Schools in Ventura County, CA
Santa Clara Elementary School
Diocesan school · Grades Pre-K–8
232 students
Oxnard, CA
BOverall grade232 students21 students per teacher
#11 Largest Private Schools in Ventura County, CA
Bethany Christian School
Christian school (nondenominational) · Grades Pre-K–8
218 students
Thousand Oaks, CA
B-Overall grade218 students15 students per teacher
#12 Largest Private Schools in Ventura County, CA
St. Anthony School
Parish school · Grades Pre-K–8
217 students
Oxnard, CA
A+Overall grade217 students17 students per teacher
#13 Largest Private Schools in Ventura County, CA
Oak Grove School
Independent school · Grades Pre-K–12
216 students
Ojai, CA
BOverall grade216 students8 students per teacher
#14 Largest Private Schools in Ventura County, CA
St. Rose of Lima Elementary
Diocesan school · Grades K–8
212 students
Simi Valley, CA
AOverall grade212 students17 students per teacher
#15 Largest Private Schools in Ventura County, CA
City Christian School
Christian school (nondenominational) · Grades K–8
204 students
Ventura, CA
BOverall grade204 students21 students per teacher
#16 Largest Private Schools in Ventura County, CA
Sacred Heart Elementary School
Diocesan school · Grades K–8
172 students
Ventura, CA
A+Overall grade172 students17 students per teacher
#17 Largest Private Schools in Ventura County, CA
Santa Clara High School
Diocesan school · Grades 9–12
166 students
Oxnard, CA
AOverall grade166 students13 students per teacher
#18 Largest Private Schools in Ventura County, CA
Ascension Lutheran School
Lutheran (ELCA) school · Grades K–7
162 students
Thousand Oaks, CA
A+Overall grade162 students10 students per teacher
#19 Largest Private Schools in Ventura County, CA
Cornerstone Christian Schools
Christian school (nondenominational) · Grades Pre-K–8
162 students
Camarillo, CA
B+Overall grade162 students14 students per teacher
#20 Largest Private Schools in Ventura County, CA
Ventura County Christian School
Christian school (nondenominational) · Grades Pre-K–12
156 students
Ventura, CA
B+Overall grade156 students14 students per teacher
#21 Largest Private Schools in Ventura County, CA
Our Lady of Guadalupe School
Diocesan school · Grades Pre-K–8
153 students
Oxnard, CA
A+Overall grade153 students11 students per teacher
#22 Largest Private Schools in Ventura County, CA
Phoenix Ranch School
Independent school · Grades Pre-K–6
151 students
Simi Valley, CA
B+Overall grade151 students10 students per teacher
#23 Largest Private Schools in Ventura County, CA
St. Sebastian School
Parish school · Grades K–8
150 students
Santa Paula, CA
B+Overall grade150 students17 students per teacher
#24 Largest Private Schools in Ventura County, CA
St. Patrick's Episcopal Day School
Episcopal school · Grades K–6
144 students
Thousand Oaks, CA
B+Overall grade144 students12 students per teacher
From official public records, updated October 2026.