Very Good
#172 of 1,787 private schools in CA
Top 10% of private schools
St Marks School - Altadena
Elementary School
1050 E ALTADENA DR, Altadena, CA 91001
Enrollment
210
Student-Teacher
9.7:1
Score
7.7
Grades
Kindergarten – 6th
Enrollment
210
Student-Teacher
9.7:1
Score
7.7
Grades
Kindergarten – 6th
Data vintage
2021-22
Data vintage2021-22
How this school compares
California private schools
#172 of 1,787
In Altadena
#2 of 6
public schools
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St Marks School - Altadena
Elementary School in Altadena · grades Kindergarten – 6th. Start here, then compare fit against nearby and district options.
Sahag-mesrob Armenian Christian School
0.0 mi away. Use as a geographic alternative in the same move search.
Saint Mark's School
0.0 mi away. Use as a geographic alternative in the same move search.
About St Marks School - Altadena
St Marks School - Altadena is a private elementary school in Altadena, CA. St Marks School - Altadena serves approximately 210 students, and covers grades Kindergarten-6th, and has a 9.7:1 student-teacher ratio. St Marks School - Altadena has a current MySchoolScout rating of 7.7 out of 10 and ranks #172 of 1,787 private schools in CA.
- This school 7.7 · Very Good
- CA avg 6.2
What Parents Should Know
At 9.7:1 students to teachers, St Marks School - Altadena sits well below the national average. Smaller classes like that usually mean more one-on-one time between students and teachers.
St Marks School - Altadena is private, so it runs independently of the local district and sets its own curriculum. That freedom cuts both ways depending on what you want for your child. If you're considering it, start with the practical questions: tuition, financial aid, and how admissions work.
Compare to Public Schools
BetaHow St Marks School - Altadena compares to 8 public schools serving similar grades in Altadena, CA
Student Demographics
Nearby Elementary Schools
| School | Rating |
|---|---|
| St Marks School - Altadena (this school) | 7.7 |
| Altadena Elementary | 6.6 |
| Charles W. Eliot Middle | 6.3 |
| Aveson School of Leaders | 8.8 |
| Pasadena Rosebud Academy | 9.2 |
| OCS - South | 7.8 |
| Aveson Global Leadership Academy | 6.6 |
| Odyssey Charter | 8.1 |
| Mary W. Jackson STEAM Multilingual Magnet Elementary | 8.1 |
Demographics sourced from NCES Private School Survey (PSS) and Common Core of Data (CCD). Comparisons are based on enrollment-weighted averages.
Score Breakdown
PreliminaryWhat 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
1050 E ALTADENA DR, Altadena, CA 91001
Nearby Alternatives
Families considering St Marks School - Altadena may also want to explore other elementary schools in the area. Pasadena Rosebud Academy (rated 9.2/10, 1.1 miles away), which scores notably higher. Another option is Aveson School of Leaders (rated 8.8/10, 1.0 miles away), which scores notably higher. Additionally, STRATFORD SCHOOL- ALTADENA ALLEN (rated 8.2/10, 1.2 miles away), which scores slightly higher. For more schools in Altadena, see our Altadena schools guide .
Nearby Schools
20 within 1.4 mi| School | Distance | Rating |
|---|---|---|
| Sahag-Mesrob Armenian Christian School Altadena | 0.0 mi | — |
| SAHAG-MESROB ARMENIAN CHRISTIAN SCHOOL Altadena | 0.0 mi | 7.3 |
| Saint Mark's School Altadena | 0.0 mi | — |
| Charles W. Eliot Middle Altadena | 0.5 mi | 6.3 |
| Altadena Elementary Altadena | 0.4 mi | 6.6 |
| St Elizabeth Parish School Altadena | 0.8 mi | — |
| ST ELIZABETH SCHOOL Altadena | 0.9 mi | 6.9 |
| PASADENA WALDORF SCHOOL Altadena | 0.9 mi | 7.3 |
| OAK KNOLL MONTESSORI SCHOOL Altadena | 1.1 mi | 6.3 |
| Pasadena Rosebud Academy Altadena | 1.1 mi | 9.2 |
| Aveson School of Leaders Altadena | 1.0 mi | 8.8 |
| FAIR OAKS SCHOOL Altadena | 1.1 mi | — |
| EF Academy Pasadena Pasadena | 1.3 mi | — |
| STRATFORD SCHOOL- ALTADENA ALLEN Altadena | 1.2 mi | 8.2 |
| Longfellow (Henry W.) Elementary Pasadena | 1.4 mi | 6.8 |
| OCS - South Altadena | 1.2 mi | 7.8 |
| PASADENA CHRISTIAN SCHOOL Pasadena | 1.4 mi | 7.6 |
| Tabernacle Of David Christian Academy Pasadena | 1.6 mi | — |
| Harriet Tubman Pasadena | 1.4 mi | — |
| HARRIET TUBMAN PRESCHOOL & ELEMENTARY Pasadena | 1.4 mi | — |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 91001 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$133,840
Median Home Value
$1,085,000
Median Rent
$2,298/mo
Population
36,402
College Educated
52.1%
Homeownership
80.5%
Avg Commute
27.9 min
Poverty Rate
7.2%
Median Age
46.1
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Arete Charter Academy Grass Valley, CA | 7.7 |
| BARNHART SCHOOL Arcadia, CA | 7.7 |
| Benjamin Foxen Elementary Santa Maria, CA | 7.7 |
| Cabrillo Elementary San Diego, CA | 7.7 |
| Charter Alternative Program (CAP) Placerville, CA | 7.7 |
| Creekside Charter Olympic Valley, CA | 7.7 |
Frequently Asked Questions
Common questions about St Marks School - Altadena
What grades does St Marks School - Altadena serve?
St Marks School - Altadena serves students in grades Kindergarten through 6th.
How many students attend St Marks School - Altadena?
St Marks School - Altadena has an enrollment of approximately 210 students.
What is the student-teacher ratio at St Marks School - Altadena?
The student-teacher ratio at St Marks School - Altadena is 9.7:1. A lower ratio generally means more individual attention per student. The national average is approximately 11:1 for private schools.
How does St Marks School - Altadena rank in CA?
St Marks School - Altadena ranks #172 of 1,787 private schools in CA.
What is St Marks School - Altadena's MySchoolScout rating?
St Marks School - Altadena has a current MySchoolScout rating of 7.7 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.
Is St Marks School - Altadena a private school?
Yes, St Marks School - Altadena is a private coeducational school with a Episcopal 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 Marks School - Altadena a religious school?
St Marks School - Altadena has a Episcopal religious affiliation.
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Neighborhood Context
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Quick Facts NCES PSS (SY 2021-22)
- Grades
- Kindergarten – 6th
- Enrollment
- 210
- Gender Split
- 50% M / 50% F
- Student-Teacher Ratio
- 9.7:1
- Teachers (FTE)
- 22
- Type
- private
- Coed Status
- coed
- Affiliation
- Episcopal
- School Day
- 7 hours
- Days Per Year
- 180 days
- Setting
- Large Suburb
- County
- Los Angeles County
- Phone
- (626) 798-8858
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