#25 Most Diverse Private Schools in San Diego County, CA
St. Mary School
Diocesan school · Grades K–8
Largest group: 48% of students
Escondido, CA
A+Overall grade139 students13 students per teacher
2026 lists
Most Diverse Private Schools in San Diego County, CA
Private schools in San Diego County, CA with the most varied mix of students. Top 50 of 102 schools.
From official public records, updated October 2026.