Castilleja School
Independent school · Grades 6–12
Palo Alto, CA
1310 Bryant St, Palo Alto, CA 94301
Overall grade: A+
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- B+Class size
- ACollege-going
- B+Years serving families
- A+Diversity
What stands out
- 97% of graduates go to four-year colleges
- Small classes: about 7 students per teacher
Castilleja School is an independent private school in Palo Alto, California, for students from 6th grade through 12th grade. It has about 424 students and around 7 students per teacher. The school is an all-girls school. The school reports that about 97% of its graduates go on to four-year colleges. Students attend about 6 hours a day, 179 days a year.
At a glance
- Grades
- Grades 6–12
- Students
- 424
- Teachers
- 60.1 (full-time equivalent)
- Students per teacher
- 7.1
- Boys and girls
- All girls
- Religious affiliation
- None (nonsectarian)
- School day
- About 6 hours
- School year
- 179 days
- Graduates going to 4-year colleges
- About 97% (the school's estimate for the class before the survey)
- Library
- Yes
Reviews
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How it compares
- Larger than 78% of independent schools in California.
- Compared with 156 independent schools in California.
Students by survey year
Total students reported in official records since 2011–12.
Students by grade
Student body
Member of
- National Coalition of Girls' Schools
- National Association of Independent Schools
Questions to ask on a tour
- What is tuition, and what does it include (books, fees, uniforms, trips)?
- Do you offer financial aid, sibling discounts or payment plans?
- Do you accept ESA, voucher or tax-credit scholarship funds?
- How big are classes in my child's grade?
- What support is there for students who need extra help or more challenge?
- Is the school accredited, and by whom?
- What do a typical day and a typical week look like?
- How does the school communicate with families?
Questions about Castilleja School
What grades does Castilleja School serve?
Castilleja School serves grades 6–12.
How many students attend Castilleja School?
About 424 students, with 7 students per teacher, according to official records.
How much is tuition at Castilleja School?
Call the school to ask about tuition, financial aid and payment plans.
Official record · Updated October 2026 · Official search · Something wrong? Tell us
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