#1 Most Diverse Private Schools in Fullerton, CA
Rosary Academy
Diocesan school · Grades 9–12
Largest group: 45% of students
Fullerton, CA
A+Overall gradeAll girls464 students13 students per teacher
2026 lists
Most Diverse Private Schools in Fullerton, CA
Private schools in Fullerton, CA with the most varied mix of students. Top 6 of 6 schools.
#2 Most Diverse Private Schools in Fullerton, CA
St. Juliana Falconieri School
Parish school · Grades K–8
Largest group: 50% of students
Fullerton, CA
BOverall grade272 students23 students per teacher
#3 Most Diverse Private Schools in Fullerton, CA
Ivycrest Montessori Private School - Chapman
Montessori school · Grades K–6
Largest group: 51% of students
Fullerton, CA
B+Overall grade95 students9 students per teacher
#4 Most Diverse Private Schools in Fullerton, CA
Arborland Montessori-Hughes Campus
Montessori school · Grades Pre-K–8
Largest group: 59% of students
Fullerton, CA
B+Overall grade152 students8 students per teacher
#5 Most Diverse Private Schools in Fullerton, CA
Eastside Christian Schools
Christian school (nondenominational) · Grades Pre-K–12
Largest group: 83% of students
Fullerton, CA
AOverall grade90 students6 students per teacher
#6 Most Diverse Private Schools in Fullerton, CA
Eastside Christian
Christian school (nondenominational) · Grades K–12
Largest group: 92% of students
Fullerton, CA
A-Overall grade90 students4 students per teacher
From official public records, updated October 2026.