Castilleja School

The admission application deadline for fall 2026 has passed.

If you would like to apply as a late applicant, please contact the Admission Team at admission@castilleja.org 

Women Learning, Women Leading

Since 1907, Castilleja has been creating confident thinkers and compassionate leaders in the only non-sectarian all-girls middle and high school in the San Francisco Bay area. We are a vibrant, inclusive, and equitable community that remains true to our founding principles, the 5Cs—conscience, courtesy, character, courage, and charity. At Castilleja, each girl can develop confidence, make choices, and learn skills that allow her to discover what’s possible for her. 

In the Company of Girls

Combining over a century of experience teaching according to the latest findings about how girls learn best, Castilleja is a school where girls can thrive socially, intellectually, emotionally, and physically. As a community of learners, Castilleja girls explore challenging subjects with fearless abandon and boundless enthusiasm while building lifelong friendships. The success of the all-girls environment has never been about the absence of boys; it has always been about the steadying and inspiring presence of girls.   

School Mission

Castilleja School educates motivated young women to become confident thinkers and compassionate leaders with a sense of purpose to effect change in the world.

Please visit our website to learn more about the student experience at Castilleja.