#1 Largest Private Schools in Palo Alto, CA
The VR School
Independent school · Grades 1–12
630 students
Palo Alto, CA
BOverall grade630 students9 students per teacher
2026 lists
Largest Private Schools in Palo Alto, CA
The private schools in Palo Alto, CA with the most students. Top 18 of 18 schools.
#2 Largest Private Schools in Palo Alto, CA
Silicon Valley International School
Independent school · Grades Pre-K–12
567 students
Palo Alto, CA
AOverall grade567 students6 students per teacher
#3 Largest Private Schools in Palo Alto, CA
Castilleja School
Independent school · Grades 6–12
424 students
Palo Alto, CA
A+Overall gradeAll girls424 students7 students per teacher
#4 Largest Private Schools in Palo Alto, CA
Keys Family Day School
Independent school · Grades K–8
323 students
Palo Alto, CA
AOverall grade323 students7 students per teacher
#5 Largest Private Schools in Palo Alto, CA
Keys Family Day School
Independent school · Grades K–8
321 students
Palo Alto, CA
A+Overall grade321 students7 students per teacher
#6 Largest Private Schools in Palo Alto, CA
Gideon Hausner Jewish Day School
Jewish day school · Grades K–8
277 students
Palo Alto, CA
BOverall grade277 students8 students per teacher
#7 Largest Private Schools in Palo Alto, CA
The Girls' Middle School
Independent school · Grades 6–8
198 students
Palo Alto, CA
A+Overall gradeAll girls198 students6 students per teacher
#8 Largest Private Schools in Palo Alto, CA
Kehillah Jewish High School
Jewish day school · Grades 9–12
189 students
Palo Alto, CA
A+Overall grade189 students6 students per teacher
#9 Largest Private Schools in Palo Alto, CA
St. Elizabeth Seton School
Diocesan school · Grades Pre-K–8
179 students
Palo Alto, CA
A+Overall grade179 students12 students per teacher
#10 Largest Private Schools in Palo Alto, CA
Hope Technology School
Special education school · Grades Pre-K–12
92 students
Palo Alto, CA
A+Overall grade92 students7 students per teacher
#11 Largest Private Schools in Palo Alto, CA
Living Wisdom School of Palo Alto
Alternative school · Grades K–12
71 students
Palo Alto, CA
A+Overall grade71 students7 students per teacher
#12 Largest Private Schools in Palo Alto, CA
Athena Academy
Special education school · Grades 1–8
61 students
Palo Alto, CA
B+Overall grade61 students5 students per teacher
#13 Largest Private Schools in Palo Alto, CA
Headsup Child Development Center Palo Alto
Montessori school · Grades Pre-K–7
60 students
Palo Alto, CA
B+Overall grade60 students20 students per teacher
#14 Largest Private Schools in Palo Alto, CA
Achieve
Special education school · Grades 1–12
58 students
Palo Alto, CA
AOverall grade58 students7 students per teacher
#15 Largest Private Schools in Palo Alto, CA
Imagination Lab School
Alternative school · Grades K–7
34 students
Palo Alto, CA
A-Overall grade34 students7 students per teacher
#16 Largest Private Schools in Palo Alto, CA
Tru School
Independent school · Grades K–5
31 students
Palo Alto, CA
B+Overall grade31 students9 students per teacher
#17 Largest Private Schools in Palo Alto, CA
Fusion Academy - Palo Alto
Alternative school · Grades 6–12
27 students
Palo Alto, CA
AOverall grade27 students1 students per teacher
#18 Largest Private Schools in Palo Alto, CA
Living Widsom High School
Religious school · Grades 9–12
23 students
Palo Alto, CA
23 students10 students per teacher
From official public records, updated October 2026.