#25 Largest Private Schools in Orange County, CA
Rosary Academy
Diocesan school · Grades 9–12
464 students
Fullerton, CA
A+Overall gradeAll girls464 students13 students per teacher
2026 lists
Largest Private Schools in Orange County, CA
The private schools in Orange County, CA with the most students. Top 50 of 170 schools.
From official public records, updated October 2026.