St. Didacus School
Parish school · Grades Pre-K–8
Sylmar, CA
14325 Astoria St, Sylmar, CA 91342
Overall grade: B-
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- B-Class size
- A-Years serving families
- BDiversity
What stands out
- The only Catholic school in Sylmar
- Growing: enrollment up 36% since 2011–12
- Serving families in Sylmar since at least 2011
In Sylmar, California, St. Didacus School is a Catholic parish school for students from pre-K through 8th grade. About 266 students attend, with roughly 25 students per teacher. Enrollment is up about 36% since 2011–12. The school is part of the Archdiocese of Los Angeles. The school day runs about 7 hours, 185 days a year.
At a glance
- Grades
- Grades Pre-K–8
- Students
- 266
- Teachers
- 10.8 (full-time equivalent)
- Students per teacher
- 24.6
- Boys and girls
- Coed · 141 girls, 125 boys
- Religious affiliation
- Catholic · Parish school
- Diocese
- Archdiocese of Los Angeles
- School day
- About 7 hours
- School year
- 185 days
Reviews
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How it compares
- Larger than 71% of Catholic elementary schools in California.
- Compared with 416 Catholic elementary 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 St. Didacus School
What grades does St. Didacus School serve?
St. Didacus School serves grades Pre-K–8.
How many students attend St. Didacus School?
About 266 students, with 25 students per teacher, according to official records.
How much is tuition at St. Didacus 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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