Junipero Serra High School
Diocesan school · Grades 9–12
San Mateo, CA
451 W 20th Ave, San Mateo, CA 94403
Overall grade: B
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- BClass size
- A-College-going
- A-Years serving families
- ADiversity
What stands out
- Serving families in San Mateo since at least 2011
In San Mateo, California, Junipero Serra High School is a Catholic diocesan school for students from 9th grade through 12th grade. About 859 students attend, with roughly 18 students per teacher. Its enrollment has held steady since 2011–12. The school is an all-boys school and is part of the Archdiocese of San Francisco. The school reports that about 84% of its graduates go on to four-year colleges. The school day runs about 6.5 hours, 168 days a year.
At a glance
- Grades
- Grades 9–12
- Students
- 859
- Teachers
- 47.3 (full-time equivalent)
- Students per teacher
- 18.2
- Boys and girls
- All boys
- Religious affiliation
- Catholic · Diocesan school
- Diocese
- Archdiocese of San Francisco
- School day
- About 6.5 hours
- School year
- 168 days
- Graduates going to 4-year colleges
- About 84% (the school's estimate for the class before the survey)
- Library
- Yes
Reviews
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How it compares
- Larger than 81% of Catholic high schools in California.
- Compared with 86 Catholic high schools in California.
Students by survey year
Total students reported in official records since 2011–12.
Students by grade
Student body
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 Junipero Serra High School
What grades does Junipero Serra High School serve?
Junipero Serra High School serves grades 9–12.
How many students attend Junipero Serra High School?
About 859 students, with 18 students per teacher, according to official records.
How much is tuition at Junipero Serra High 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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