What's Possible?

In the Company of Girls

It's about the remarkable presence of girls, not the absence of boys.


Intellectually engaging, collaborative and interdisciplinary, a Castilleja 6th through 12th grade education is carefully scaffolded to allow each student the opportunity to become her best and most authentic self.

Summer Camps

castilleja summer camp casti camp


Castilleja's unique leadership development program is woven seamlessly throughout the daily lives of students in and out of the classroom.

Alumnae Spotlight


Founder's Day
Friday, April 26, 11:30-2:30pm

Upper School Musical: Chicago
Friday, April 26, and Saturday,
April 27, 7:30-9:30pm
Sunday, April 28, 2:00-4:00pm



By engaging in a variety of hands-on making, tinkering, and engineering projects, students hone core competencies that empower them as innovators.


Upcoming Events