#1 Most Diverse Private Schools in San Mateo, CA
St. Timothy School
Diocesan school · Grades K–8
Largest group: 39% of students
San Mateo, CA
A+Overall grade152 students15 students per teacher
2026 lists
Most Diverse Private Schools in San Mateo, CA
Private schools in San Mateo, CA with the most varied mix of students. Top 9 of 9 schools.
#2 Most Diverse Private Schools in San Mateo, CA
The Nueva School
Independent school · Grades Pre-K–12
Largest group: 40% of students
San Mateo, CA
A+Overall grade950 students7 students per teacher
#3 Most Diverse Private Schools in San Mateo, CA
St. Gregory School
Diocesan school · Grades K–8
Largest group: 47% of students
San Mateo, CA
B+Overall grade297 students19 students per teacher
#4 Most Diverse Private Schools in San Mateo, CA
Episcopal Day School of St. Matthew
Episcopal school · Grades Pre-K–8
Largest group: 49% of students
San Mateo, CA
A+Overall grade290 students6 students per teacher
#5 Most Diverse Private Schools in San Mateo, CA
The Carey School
Independent school · Grades Pre-K–5
Largest group: 50% of students
San Mateo, CA
A+Overall grade252 students7 students per teacher
#6 Most Diverse Private Schools in San Mateo, CA
St. Matthew Catholic School
Parish school · Grades K–8
Largest group: 52% of students
San Mateo, CA
BOverall grade625 students24 students per teacher
#7 Most Diverse Private Schools in San Mateo, CA
Jserra Catholic High School
Diocesan school · Grades 9–12
Largest group: 55% of students
San Mateo, CA
BOverall gradeAll boys863 students17 students per teacher
#8 Most Diverse Private Schools in San Mateo, CA
Junipero Serra High School
Diocesan school · Grades 9–12
Largest group: 55% of students
San Mateo, CA
BOverall gradeAll boys859 students18 students per teacher
#9 Most Diverse Private Schools in San Mateo, CA
Odyssey School
Independent school · Grades 6–8
Largest group: 60% of students
San Mateo, CA
AOverall grade50 students7 students per teacher
From official public records, updated October 2026.