St. Mary's High School
Diocesan school · Grades 9–12
Stockton, CA
5648 N El Dorado St, Stockton, CA 95207
Overall grade: A+
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- A-Class size
- A-College-going
- A-Years serving families
- A+Diversity
What stands out
- The largest Catholic school in Stockton
- 90% of graduates go to four-year colleges
- Serving families in Stockton since at least 2011
In Stockton, California, St. Mary's High School is a Catholic diocesan school for students from 9th grade through 12th grade. About 840 students attend, with roughly 14 students per teacher. It has been listed in official private school records since 2011–12. The school is part of the Diocese of Stockton. The school reports that about 90% of its graduates go on to four-year colleges. The school day runs about 6 hours, 178 days a year.
At a glance
- Grades
- Grades 9–12
- Students
- 840
- Teachers
- 60.1 (full-time equivalent)
- Students per teacher
- 14
- Boys and girls
- Coed · 394 girls, 446 boys
- Religious affiliation
- Catholic · Diocesan school
- Diocese
- Diocese of Stockton
- School day
- About 6 hours
- School year
- 178 days
- Graduates going to 4-year colleges
- About 90% (the school's estimate for the class before the survey)
- Library
- Yes
Reviews
Be the first to share what you love about St. Mary's High School.
How it compares
- Smaller classes than 50% of Catholic high schools in California (14 students per teacher).
- Larger than 80% 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
Member of
- National Catholic Educational Association
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 St. Mary's High School
What grades does St. Mary's High School serve?
St. Mary's High School serves grades 9–12.
How many students attend St. Mary's High School?
About 840 students, with 14 students per teacher, according to official records.
How much is tuition at St. Mary's 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
Other private schools nearby
St. Marys High School
Diocesan school · Grades 9–12
One of 6 Catholic schools in Stockton
Stockton, CA0.0 mi
St. Luke School
Diocesan school · Grades K–8
One of 6 Catholic schools in Stockton
Stockton, CA1.3 mi
Presentation Parish School
Diocesan school · Grades K–8
Serving families in Stockton since at least 2011
Stockton, CA1.5 mi
Stockton Christian Academy
Pentecostal school · Grades Pre-K–12
90% of graduates go to four-year colleges
Stockton, CA1.8 mi
Stockton Accelerated Institute
Other religious · Montessori · Grades K–12
The only Montessori school in Stockton
Stockton, CA2.7 mi
Brookside Christian School
Early childhood program · Grades Pre-K–K
The only preschool in Stockton
Stockton, CA2.9 mi