Castilleja School educates motivated young women to become confident thinkers and compassionate leaders with a sense of purpose to effect change in the world. Founded in 1907, Castilleja is the only non-sectarian, all-girls middle and high school in the San Francisco Bay Area.
Quick Stats (2025)
- Top Ranked CA School
- Grades: 6-12
- Enrollment: 424 students
- Yearly Tuition: $59,600
- Average class size: 15 students
- Application Deadline: Jan. 9
- Source: Verified school update
Top Rankings
Castilleja School ranks among the top 20% of private schools in California for:
Category
Attribute
SAT Score
ACT Score
Advanced Degrees
Student Body
Sports offered
School History
School Resources
School Overview
School Membership(s)School Assoc.
Religious Affiliation
Grades Offered
Grades 6-12
Year Founded
1907
School Calendar
Student Body
Total Students
424 students
Student Body Type
% Students of Color
53%
State avg.: 51%
Students by Grade
Academics and Faculty
Total Classroom Teachers
62 teachers
Student : Teacher Ratio
7:1
National avg.: 13:1
% Faculty w/Advanced Degree
87%
Average Class Size
15 students
List of Courses Offered
Average SAT score
1480
(Out of 1600)
Average ACT score
33
(Out of 36)
Matriculation DataMatric. Data
Classroom Dress Code
Formal
Uniform
Tuition and Acceptance Rate
Admission Deadline
Jan. 9
Yearly Tuition Cost
$59,600
Tuition Notes
$4 million in Tuition Assistance per year
% on Financial Aid
22%
Admissions Director
Jill Lee
Admissions Associate
aayala@castilleja.org
Endowment Size
$70 million
Sports
Total Sports Offered
11 sports
Sports
School Notes
- School Motto: Empowering Young Women Since 1907
- School Mascot: Alligators
- To learn more about the student experience at Castilleja, please visit www.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.
- 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.
- Sample of notable school alumni/alumnae:
- Ella Debenham, Pomona Pitzer, Water Polo (2024) -
- Olivia Detter, Northwestern University, Swimming (2024) -
- Ruby Flath, Tufts University, Volleyball (2024) -
Source: Verified school update
Frequently Asked Questions
How much does Castilleja School cost?
Castilleja School's tuition is approximately $59,600 for private students.
What schools are Castilleja School often compared to?
Castilleja School is often viewed alongside schools like The Girls' Middle School by visitors of our site.
Who are famous alumni from Castilleja School?
Castilleja School famous alumni include: Ella Debenham, Pomona Pitzer, Water Polo (2024), Olivia Detter, Northwestern University, Swimming (2024) and Ruby Flath, Tufts University, Volleyball (2024).
What sports does Castilleja School offer?
Castilleja School offers 11 interscholastic sports: Basketball, Cross Country, Golf, Lacrosse, Soccer, Softball, Swimming, Tennis, Track and Field, Volleyball and Water Polo. Castilleja School is ranked as one of the top 20% of private schools in California for most sports offered.
What is Castilleja School's ranking?
Castilleja School ranks among the top 20% of private schools in California for: Highest average SAT score, Highest average ACT score, Highest percentage of faculty with advanced degrees, Largest student body, Most sports offered, Oldest founding date and Largest endowments.
When is the application deadline for Castilleja School?
The application deadline for Castilleja School is Jan. 9.
In what neighborhood is Castilleja School located?
Castilleja School is located in the Old Palo Alto neighborhood of Palo Alto, CA.
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Show me:
Popular comparisons: Castilleja School vs. The Girls' Middle School
People that viewed Castilleja School also viewed these schools: Menlo School, Archer School For Girls, The Harker School Upper School, Head Royce School and Marlborough School.
The nearest high school to Castilleja School is Living Wisdom School Of Palo Alto (0.9 miles away)
The nearest elementary school is Trū Progressive Microschool (0.7 miles away)
The nearest preschool is Guidepost Montessori (0.3 miles away)
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School Reviews
5 9/22/2023
Zeitgeist of all prep schools. 100% college admission rate. 100% your daughter will be highly successful and abundant in means. Castilleja produces winners, not supplicants.
5 1/19/2012
Fun athletic energetic school with good teachers
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