#1 Largest Private Schools in Walnut Creek, CA
Berean Christian High School
Christian school (nondenominational) · Grades 9–12
380 students
Walnut Creek, CA
BOverall grade380 students14 students per teacher
2026 lists
Largest Private Schools in Walnut Creek, CA
The private schools in Walnut Creek, CA with the most students. Top 8 of 8 schools.
#2 Largest Private Schools in Walnut Creek, CA
Seven Hills School
Independent school · Grades Pre-K–8
378 students
Walnut Creek, CA
B+Overall grade378 students10 students per teacher
#3 Largest Private Schools in Walnut Creek, CA
Contra Costa Christian Schools
Christian school (nondenominational) · Grades Pre-K–12
335 students
Walnut Creek, CA
AOverall grade335 students12 students per teacher
#4 Largest Private Schools in Walnut Creek, CA
St. Mary Elementary School
Diocesan school · Grades Pre-K–8
300 students
Walnut Creek, CA
B+Overall grade300 students20 students per teacher
#5 Largest Private Schools in Walnut Creek, CA
Sonder Creek Academy
Independent school · Grades K–8
102 students
Walnut Creek, CA
A+Overall grade102 students5 students per teacher
#6 Largest Private Schools in Walnut Creek, CA
Noble Learning Academy
Independent school · Grades 6–8
41 students
Walnut Creek, CA
A-Overall grade41 students6 students per teacher
#7 Largest Private Schools in Walnut Creek, CA
Fusion Academy--Walnut Creek
Independent school · Grades 7–12
40 students
Walnut Creek, CA
AOverall grade40 students3 students per teacher
#8 Largest Private Schools in Walnut Creek, CA
Kla Schools of Walnut Creek
Early childhood program · Grades Pre-K–K
32 students
Walnut Creek, CA
B+Overall grade32 students16 students per teacher
From official public records, updated October 2026.