#1 Private Schools with the Smallest Classes in Marin County, CA
Terra Marin School
Independent school · Grades Pre-K–8
2.9 students per teacher
Mill Valley, CA
A+Overall grade60 students3 students per teacher
2026 lists
Private Schools with the Smallest Classes in Marin County, CA
Private schools in Marin County, CA with the fewest students per teacher (not counting preschools and special education schools). Top 21 of 21 schools.
#2 Private Schools with the Smallest Classes in Marin County, CA
Marin Waldorf School
Independent school · Grades Pre-K–8
3.1 students per teacher
San Rafael, CA
A+Overall grade145 students3 students per teacher
#3 Private Schools with the Smallest Classes in Marin County, CA
Brandeis Marin
Jewish day school · Grades K–8
4.5 students per teacher
San Rafael, CA
A+Overall grade140 students5 students per teacher
#4 Private Schools with the Smallest Classes in Marin County, CA
Marin Primary & Middle School
Independent school · Grades Pre-K–8
5 students per teacher
Larkspur, CA
A+Overall grade199 students5 students per teacher
#5 Private Schools with the Smallest Classes in Marin County, CA
Montessori De Terra Linda
Montessori school · Grades Pre-K–6
5.6 students per teacher
San Rafael, CA
A-Overall grade96 students6 students per teacher
#6 Private Schools with the Smallest Classes in Marin County, CA
The New Village School
Independent school · Grades Pre-K–8
6.2 students per teacher
Sausalito, CA
AOverall grade92 students6 students per teacher
#7 Private Schools with the Smallest Classes in Marin County, CA
Mount Tamalpais School
Independent school · Grades K–8
6.6 students per teacher
Mill Valley, CA
A+Overall grade254 students7 students per teacher
#8 Private Schools with the Smallest Classes in Marin County, CA
The Branson School
Independent school · Grades 9–12
6.7 students per teacher
Ross, CA
A+Overall grade370 students7 students per teacher
#9 Private Schools with the Smallest Classes in Marin County, CA
Good Shepherd Lutheran School
Lutheran school · Grades Pre-K–8
7 students per teacher
Novato, CA
A+Overall grade178 students7 students per teacher
#10 Private Schools with the Smallest Classes in Marin County, CA
Marin Horizon School
Independent school · Grades Pre-K–8
7 students per teacher
Mill Valley, CA
AOverall grade177 students7 students per teacher
#11 Private Schools with the Smallest Classes in Marin County, CA
San Domenico School
Independent school · Grades K–12
7.4 students per teacher
San Anselmo, CA
A+Overall grade679 students7 students per teacher
#12 Private Schools with the Smallest Classes in Marin County, CA
Marin Academy
Independent school · Grades 9–12
7.9 students per teacher
San Rafael, CA
AOverall grade459 students8 students per teacher
#13 Private Schools with the Smallest Classes in Marin County, CA
Marin Country Day School
Independent school · Grades K–8
8.8 students per teacher
Corte Madera, CA
B+Overall grade597 students9 students per teacher
#14 Private Schools with the Smallest Classes in Marin County, CA
Mark Day School
Independent school · Grades K–8
9.9 students per teacher
San Rafael, CA
B+Overall grade386 students10 students per teacher
#15 Private Schools with the Smallest Classes in Marin County, CA
Marin Montessori School
Montessori school · Grades Pre-K–9
10.9 students per teacher
Corte Madera, CA
B+Overall grade164 students11 students per teacher
#16 Private Schools with the Smallest Classes in Marin County, CA
St. Patrick School
Parish school · Grades K–8
12.1 students per teacher
Larkspur, CA
A+Overall grade247 students12 students per teacher
#17 Private Schools with the Smallest Classes in Marin County, CA
St. Hilary School
Diocesan school · Grades K–8
12.6 students per teacher
Tiburon, CA
A+Overall grade252 students13 students per teacher
#18 Private Schools with the Smallest Classes in Marin County, CA
Marin Catholic High School
Diocesan school · Grades 9–12
14.1 students per teacher
Kentfield, CA
A+Overall grade791 students14 students per teacher
#19 Private Schools with the Smallest Classes in Marin County, CA
St. Raphael School
Parish school · Grades Pre-K–8
14.3 students per teacher
San Rafael, CA
A+Overall grade193 students14 students per teacher
#20 Private Schools with the Smallest Classes in Marin County, CA
Our Lady of Loretto School
Diocesan school · Grades K–8
15 students per teacher
Novato, CA
B+Overall grade184 students15 students per teacher
#21 Private Schools with the Smallest Classes in Marin County, CA
St. Isabella School
Parish school · Grades K–8
20.4 students per teacher
San Rafael, CA
BOverall grade285 students20 students per teacher
From official public records, updated October 2026.