#1 Private Schools with the Smallest Classes in San Mateo, CA
Episcopal Day School of St. Matthew
Episcopal school · Grades Pre-K–8
5.8 students per teacher
San Mateo, CA
A+Overall grade290 students6 students per teacher
2026 lists
Private Schools with the Smallest Classes in San Mateo, CA
Private schools in San Mateo, CA with the fewest students per teacher (not counting preschools and special education schools). Top 9 of 9 schools.
#2 Private Schools with the Smallest Classes in San Mateo, CA
The Nueva School
Independent school · Grades Pre-K–12
7.1 students per teacher
San Mateo, CA
A+Overall grade950 students7 students per teacher
#3 Private Schools with the Smallest Classes in San Mateo, CA
Odyssey School
Independent school · Grades 6–8
7.1 students per teacher
San Mateo, CA
AOverall grade50 students7 students per teacher
#4 Private Schools with the Smallest Classes in San Mateo, CA
The Carey School
Independent school · Grades Pre-K–5
7.2 students per teacher
San Mateo, CA
A+Overall grade252 students7 students per teacher
#5 Private Schools with the Smallest Classes in San Mateo, CA
St. Timothy School
Diocesan school · Grades K–8
15.4 students per teacher
San Mateo, CA
A+Overall grade152 students15 students per teacher
#6 Private Schools with the Smallest Classes in San Mateo, CA
Jserra Catholic High School
Diocesan school · Grades 9–12
17.3 students per teacher
San Mateo, CA
BOverall gradeAll boys863 students17 students per teacher
#7 Private Schools with the Smallest Classes in San Mateo, CA
Junipero Serra High School
Diocesan school · Grades 9–12
18.2 students per teacher
San Mateo, CA
BOverall gradeAll boys859 students18 students per teacher
#8 Private Schools with the Smallest Classes in San Mateo, CA
St. Gregory School
Diocesan school · Grades K–8
19 students per teacher
San Mateo, CA
B+Overall grade297 students19 students per teacher
#9 Private Schools with the Smallest Classes in San Mateo, CA
St. Matthew Catholic School
Parish school · Grades K–8
24 students per teacher
San Mateo, CA
BOverall grade625 students24 students per teacher
From official public records, updated October 2026.