Average

#2959 of 3,177 private schools in CA

St. Didacus

Elementary School

14325 Astoria Street, Sylmar, CA 91342

Last updated: April 2026

Private

272

Students

23.7:1

Student-Teacher

Kindergarten – 8th

Grades Served

—

#2959 of 3,177 in CA

About St. Didacus

St. Didacus is an private elementary school in Sylmar, CA 91342. The school serves approximately 272 students in grades Kindergarten – 8th with a student-teacher ratio of 23.7:1.

It holds a MySchoolScout rating of 6.3/10, placing it in the 6.9th percentile among private schools in CA — an average rating overall. The school scores particularly well in school profile (7.5/10), ranked among private schools in CA. Located in a neighborhood with a median household income of $95,480, where 20% of adults hold a bachelor's degree or higher.

Compared to the 9 public schools in Sylmar, St. Didacus rates lower overall (6.3 vs 7.2 average).

Compare to Public Schools

Beta

How St. Didacus compares to 9 public schools serving similar grades in Sylmar, CA

Student-Teacher Ratio

23.7:1

This School

19.5:1

Public Avg

Avg School Size

272

This School

528

Public Avg

Avg School Scout Rating

6.3

This School

7.2

Public Avg

Nearby Elementary Schools

School	Distance	Enrollment	STR	Rating
St. Didacus (this school)	—	272	23.7:1	6.3
Dyer Street Elementary	0.4 mi	534	21.4:1	6.0
Sylmar Elementary	0.4 mi	415	18.9:1	8.4
Olive Vista Middle	0.5 mi	968	18.3:1	6.7
Sylmar Leadership Academy	0.9 mi	824	20.6:1	5.8
El Dorado Avenue Elementary	1.2 mi	352	18.5:1	7.9
Osceola Street Elementary	1.2 mi	355	20.9:1	7.7
Herrick Avenue Elementary	1.3 mi	376	17.9:1	6.7
Hubbard Street Elementary	1.3 mi	567	21:1	7.9
Harding Street Elementary	1.7 mi	358	17.9:1	7.8

Demographics sourced from NCES Private School Survey (PSS) and Common Core of Data (CCD). Comparisons are based on enrollment-weighted averages.

Score Breakdown

What This Rating Measures

This rating reflects classroom size, instructional time, student diversity, community resources, and school characteristics. Private schools are ranked against other private schools in CA.

👥 Classroom Attention

D 1.3 / 10

View breakdown

Student-Teacher Ratio 23.7:1

🕐 Instructional Commitment

Data Unavailable

🌍 Diversity & Inclusion

Data Unavailable

📍 Community Context

Data Unavailable

🏛️ School Profile

A- 7.5 / 10

View breakdown

Enrollment 272

View data sources

Score basis: Private school model

Data coverage: 45% of scoring components had data

Components scored: 2 of 5

Ranking pool: Private schools in CA

Test Scores

Test score data not yet available for this school.

Location

14325 Astoria Street, Sylmar, CA 91342

Nearby Schools

20 within 1.2 mi

School	Distance	Enrollment	Rating
ST DIDACUS SCHOOL Sylmar	0.0 mi	236	6.3
Sylmar Charter High Sylmar	0.2 mi	1,508	5.6
Sylmar Biotech Health and Engineering Magnet Sylmar	0.2 mi	206	9.1
Dyer Street Elementary Sylmar	0.4 mi	534	6.0
Sylmar Elementary Sylmar	0.4 mi	415	8.4
Evergreen Continuation Sylmar	0.4 mi	79	3.6
PUC Community Charter Elementary Burbank	0.4 mi	296	8.5
Olive Vista Middle Sylmar	0.5 mi	968	6.7
POVERELLO OF ASSISI PRESCHOOL Sylmar	0.7 mi	53	6.3
Poverello of Assisi Preschool Sylmar	0.7 mi	43	6.3
PARK MONTESSORI CHILDREN'S CENTER Sylmar	0.7 mi	6	6.3
Sylmar Leadership Academy Sylmar	0.9 mi	824	5.8
PUC Triumph Charter Academy and PUC Triumph Charter High Burbank	1.0 mi	802	8.1
PUC Lakeview Charter High Burbank	1.0 mi	440	6.4
Gridley Street Elementary San Fernando	1.0 mi	480	5.0
First United Methodist Church/Glenoaks Christian Elementary School San Fernando	1.1 mi	48	5.0
GLENOAKS CHRISTIAN ELEMENTARY San Fernando	1.1 mi	63	5.0
Osceola Street Elementary Sylmar	1.2 mi	355	7.7
PUC Nueva Esperanza Charter Academy Burbank	1.3 mi	352	5.8
El Dorado Avenue Elementary Sylmar	1.2 mi	352	7.9

Neighborhood Census ACS (2019-2023)

Census data for ZIP 91342 (ACS 2019-2023 5-Year Estimates) · Data sources

Median Income

$95,480

Median Home Value

$641,100

Median Rent

$1,965/mo

Population

93,513

College Educated

20.1%

Homeownership

67.7%

Avg Commute

31.6 min

Poverty Rate

12.7%

Median Age

37.4

Similar Schools

Schools in the same state with comparable level, size, and ratings

School	Enrollment	Rating
Alturas Elementary Alturas, CA	357	6.3
Austin Creek Elementary Santa Rosa, CA	357	6.3
Baypoint Preparatory Academy - San Diego San Marcos, CA	237	6.3
Bella Vista Elementary Oakland, CA	379	6.3
Bridge Street Elementary Los Angeles, CA	178	6.3
Cadman Elementary San Diego, CA	196	6.3

Frequently Asked Questions

Common questions about St. Didacus

What grades does St. Didacus serve?

St. Didacus serves students in grades Kindergarten through 8th.

How many students attend St. Didacus?

St. Didacus has an enrollment of approximately 272 students.

What is the student-teacher ratio at St. Didacus?

The student-teacher ratio at St. Didacus is 23.7:1. A lower ratio generally means more individual attention per student. The national average is approximately 11:1 for private schools.

How does St. Didacus rank in CA?

St. Didacus is ranked #2959 out of 3,177 private schools in CA.

What is St. Didacus's MySchoolScout rating?

St. Didacus has a composite rating of 6.3 out of 10 on MySchoolScout. This score combines academic performance, student growth, equity, and school environment into a single score.

Is St. Didacus a private school?

Yes, St. Didacus is a private coeducational school. Private schools are not required to participate in state standardized testing, so academic performance data may be limited compared to public schools.

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Quick Facts NCES PSS (SY 2024-25)

Grades: Kindergarten – 8th
Enrollment: 272
Student-Teacher Ratio: 23.7:1
Teachers (FTE): 12
Type: private
Coed Status: coed
County: Los Angeles
Phone: (818) 367-5886
Data Year: 2025–2026

Resources & Links

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How We Rate Schools

Our ratings combine academic performance, growth, equity, and school environment into a single 1-10 score using publicly available data.

Read our methodology

Data Sources: School Info: NCES PSS (SY 2024-25) Neighborhood: Census ACS (2019-2023) Ratings: MySchoolScout (2024) Full data source details