Very Good
#227 of 1,790 private schools in CA
Top 13% of private schools
St Catherine of Siena School
Elementary School
604 MELLUS ST, Martinez, CA 94553
Estimated academic score. This school does not have standardized test data. Based on 10 schools in Martinez. Learn more
Enrollment
119
Student-Teacher
10.8:1
Score
7.5
Grades
Pre-K – 8th
Enrollment
119
Student-Teacher
10.8:1
Score
7.5
Grades
Pre-K – 8th
Updated
2021-22
Updated 2021-22
How this school compares
California elementary schools
#119 of 1,102
About St Catherine of Siena School
ST CATHERINE OF SIENA SCHOOL serves 119 students from prekindergarten through eighth grade in Martinez, offering an intimate learning environment with just 11 full-time equivalent teachers. This small elementary school maintains an impressive 10.8:1 student-teacher ratio, allowing for personalized attention and close relationships between educators and students. The school has earned recognition as one of California's top-performing institutions, ranking #58 out of 1,790 schools statewide and placing in the 97th percentile.
MySchoolScout rates the school 9.0 out of 10, reflecting its strong academic standing among elementary schools across the state. Located at 604 Mellus Street, ST CATHERINE OF SIENA SCHOOL operates as a regular public school in Martinez's well-established community. The surrounding neighborhood reflects stability and educational values, with a median household income of $118,704 and 42% of residents holding bachelor's degrees or higher.
The area maintains a low poverty rate of 6.4%, and median home values of $723,400 indicate a community invested in long-term residence. The school serves families in this large suburban setting within Contra Costa County, where nearly 50,000 residents appreciate the blend of educational excellence and community character that defines Martinez.
What Parents Should Know
With an enrollment of 119 students, St Catherine of Siena School is a smaller school where families often find a close-knit community atmosphere. Smaller settings can mean more individual attention from teachers and staff, though they may offer fewer extracurricular options than larger schools.
As a private school, St Catherine of Siena School operates independently from the local public school district. Families considering this school should inquire about tuition costs, financial aid availability, and the admissions process. Private schools are not required to follow the same curriculum standards as public schools, which can be either an advantage or a consideration depending on your priorities.
Compare to Public Schools
BetaHow St Catherine of Siena School compares to 8 public schools serving similar grades in Martinez, CA
Student Demographics
Nearby Elementary Schools
| School | Rating |
|---|---|
| St Catherine of Siena School (this school) | 7.5 |
| Briones (Alternative) | 5.1 |
| Martinez Junior High | 7.0 |
| John Muir Elementary | 7.8 |
| Morello Park Elementary | 7.1 |
| Las Juntas Elementary | 7.1 |
| John Swett Elementary | 5.7 |
| Mt. McKinley | 5.6 |
| Hidden Valley Elementary | 6.6 |
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.
Data Unavailable
View data sources
Score basis: Private school model
Data coverage: 80% of scoring components had data
Components scored: 4 of 5
Ranking pool: Private schools in CA
Test Scores
Test score data not yet available for this school.
Student Demographics NCES PSS (SY 2021-22)
Source: NCES Private School Survey (PSS)
Location
604 MELLUS ST, Martinez, CA 94553
Nearby Alternatives
Families considering St Catherine of Siena School may also want to explore other elementary schools in the area. John Muir Elementary (rated 7.8/10, 1.3 miles away), with a very similar rating. Another option is Mary Farmar Elementary (rated 7.5/10, 3.9 miles away, in nearby Benicia), with a very similar rating. Additionally, Morello Park Elementary (rated 7.1/10, 2.2 miles away), with a comparable rating. For more schools in Martinez, see our Martinez schools guide .
Nearby Schools
20 within 4.3 mi| School | Distance | Rating |
|---|---|---|
| St. Catherine of Siena Martinez | 0.0 mi | — |
| Vicente Martinez High Martinez | 0.2 mi | 6.8 |
| Briones (Alternative) Martinez | 0.2 mi | 5.1 |
| BUILDING Connections Academy Martinez Martinez | 0.2 mi | — |
| Martinez Junior High Martinez | 0.3 mi | 7.0 |
| Alhambra Senior High Martinez | 0.9 mi | 5.6 |
| WOODBRIDGE CHILDREN'S CENTER - JOHN MUIR Martinez | 1.3 mi | — |
| John Muir Elementary Martinez | 1.3 mi | 7.8 |
| John Swett Elementary Martinez | 2.3 mi | 5.7 |
| ST DOMINIC ELEMENTARY SCHOOL Benicia | 2.5 mi | 5.9 |
| Community Day Benicia | 2.6 mi | — |
| Morello Park Elementary Martinez | 2.2 mi | 7.1 |
| Liberty High Benicia | 2.6 mi | 5.7 |
| Las Juntas Elementary Martinez | 2.3 mi | 7.1 |
| Robert Semple Elementary Benicia | 3.2 mi | 5.5 |
| Mt. McKinley Martinez | 3.1 mi | 5.6 |
| Hidden Valley Elementary Martinez | 3.3 mi | 6.6 |
| Mary Farmar Elementary Benicia | 3.9 mi | 7.5 |
| Benicia High Benicia | 4.1 mi | 7.2 |
| Benicia Middle Benicia | 4.3 mi | 5.9 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 94553 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$121,023
Median Home Value
$781,400
Median Rent
$2,247/mo
Population
48,600
College Educated
41.9%
Homeownership
71.8%
Avg Commute
30.5 min
Poverty Rate
7.6%
Median Age
42.3
Community Profile
The community surrounding St Catherine of Siena School has a median household income of $121,023. It is a well-educated community where 42% of adults hold a bachelor's degree or higher. The median home value in the area is $781,400, with a median rent of $2,247/month. The local poverty rate of 7.6% is relatively low. The average commute for residents is 31 minutes. Source: U.S. Census ACS 2022 5-Year Estimates.
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| BEECHWOOD SCHOOL Menlo Park, CA | 7.5 |
| Lafayette Park Primary Center Los Angeles, CA | 7.5 |
| MARIA MONTESSORI SCHOOL San Diego, CA | 7.5 |
| MCDOWELL SCHOOL Laguna Niguel, CA | 7.5 |
| OLD ORCHARD SCHOOL Campbell, CA | 7.5 |
| OUR LADY OF GUADALUPE SCHOOL Fremont, CA | 7.5 |
Frequently Asked Questions
Common questions about St Catherine of Siena School
What grades does St Catherine of Siena School serve?
St Catherine of Siena School serves students in grades Pre-K through 8th.
How many students attend St Catherine of Siena School?
St Catherine of Siena School has an enrollment of approximately 119 students.
What is the student-teacher ratio at St Catherine of Siena School?
The student-teacher ratio at St Catherine of Siena School is 10.8:1. A lower ratio generally means more individual attention per student. The national average is approximately 11:1 for private schools.
How does St Catherine of Siena School rank in CA?
St Catherine of Siena School is ranked #227 out of 1,790 private schools in CA.
What is St Catherine of Siena School's MySchoolScout rating?
St Catherine of Siena School has a composite rating of 7.5 out of 10 on MySchoolScout. This score combines academic performance, student growth, and school environment into a single score. Equity data is shown separately for context.
Is St Catherine of Siena School a private school?
Yes, St Catherine of Siena School is a private coeducational school with a Roman Catholic affiliation. Private schools are not required to participate in state standardized testing, so academic performance data may be limited compared to public schools.
Is St Catherine of Siena School a religious school?
St Catherine of Siena School has a Roman Catholic religious affiliation.
Explore More Schools
Neighborhood Context
Powered by 
FBI UCR 2024. City-level (Martinez). Data >1 year old.
Quick Facts NCES PSS (SY 2021-22)
- Grades
- Pre-K – 8th
- Enrollment
- 119
- Gender Split
- 58% M / 42% F
- Student-Teacher Ratio
- 10.8:1
- Teachers (FTE)
- 11
- Type
- private
- Coed Status
- coed
- Affiliation
- Roman Catholic
- School Day
- 7 hours
- Days Per Year
- 180 days
- Setting
- Large Suburb
- County
- CONTRA COSTA
- Phone
- (925) 228-4140
- Data Year
- 2022–2023
Resources & Links
How We Rate Schools
Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.
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