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Elementary Schools in Altadena, California

Below Average2024–25 data3 schools · avg 36.1/100

Altadena, California has 3 ranked elementary schools with an average Scope Score of 36.1/100 — 7.7 points below the California state average of 43.8. The highest-scoring school is Altadena Elementary at 42/100, where 23.1% of students exceed the state standard on the 2025 CAASPP assessment. Altadena schools average 16.7% exceeded standard (state: 21.6%) — this exceeded-vs-met distinction reveals whether schools push students beyond proficiency or pace toward it. Chronic absenteeism averages 27.3% (above the state average of 18.1%). Data source: California Department of Education CAASPP 2025, analyzed by SchoolScope.

Avg Scope Score
36.1
State avg: 43.8
SchoolScope composite
Score Range
14.9
27.0 – 41.9
Avg Exceeded %
16.7%
State avg: 21.6%
CDE CAASPP 2025
Chronic Absenteeism
27.3%
State avg: 18.1%
CDE Attendance 2025
Schools Ranked
3
With Scope Scores

How Altadena schools compare

Altadena's 3 ranked elementary schools average a Scope Score of 36.1 — 7.7 points below the California state average of 43.8. Scores range from 27.0 to 41.9, a 14.9-point spread.

The top-ranked school is Altadena Elementary with a Scope Score of 42 and 23.1% of students exceeding standard.

Chronic absenteeism in Altadena averages 27.3%, which is below the state average of 18.1%.

How we score · Scope Score weights exceeded (40%), met (22%), growth (15%), absenteeism (10%), suspension (5%), ELPAC (5%), baseline (3%)

Schools in Altadena ranked by Scope Score

#SchoolScoreCountyExceededMet+AbsentSusp.
1Altadena Elementary
Pasadena Unified Building Momentum
42Los Angeles23.1%46.3%28.0%0.6%
2Mary W. Jackson STEAM Multilingual Magnet Elementa
Pasadena Unified Building Momentum
39Los Angeles19.8%40.2%22.8%0.1%
3Charles W. Eliot Middle
Pasadena Unified Building Momentum
27Los Angeles7.3%22.6%31.2%13.3%

Data source: California Department of Education · CAASPP 2024-25 · Methodology

Scores are SchoolScope's analysis of public data, not official CDE ratings. They represent one way of interpreting test results and should not be the sole basis for school decisions.

Private Schools in Altadena

Private schools don't participate in California's standardized testing (CAASPP) and cannot be scored or ranked. Showing enrollment, student-teacher ratio, and affiliation where available.

St. Marks School - Altadena
Church of God · Grades Pre-K-6 · 210 students
10:1Private
Pasadena Waldorf School
Nonsectarian · Grades Pre-K-12 · 184 students
6:1Private
St. Elizabeth School
Roman Catholic · Grades Pre-K-8 · 174 students
15:1Private
Stratford School- Altadena Allen
Nonsectarian · Grades Pre-K-5 · 107 students
9:1Private
Sahag-Mesrob Armenian Christian School
Brethren · Grades Pre-K-8 · 100 students
9:1Private

What Scope Scores can't tell you about Altadena

  • Class sizes and student-teacher interaction quality
  • Quality of arts, music, athletics, and enrichment programs
  • Teacher experience, turnover, and professional development
  • Campus safety, bullying climate, and social-emotional support
  • Parent and community engagement levels
  • Quality of special education and gifted programs
  • How school zones and enrollment boundaries affect access

Scope Scores measure academic performance and school climate using public data. They are one lens among many. Full methodology

Frequently asked questions

Are the schools in Altadena good?
Altadena's 3 ranked elementary schools average a Scope Score of 36.1/100, which is 7.7 points below the California state average of 43.8. 16.7% of students exceed the state standard on average (state average: 21.6%). The Scope Score weights six dimensions: exceeded standard (40%), met standard (22%), grade-level growth (15%), chronic absenteeism (10%), suspension rate (5%), and ELPAC proficiency (5%). Data source: California Department of Education CAASPP 2025, analyzed by SchoolScope.
What is the best elementary school in Altadena?
The highest-scoring elementary school in Altadena is Altadena Elementary with a Scope Score of 42/100 and 23.1% of students exceeding the state standard. Rankings are based on SchoolScope's 2025 Scope Score, which measures academic performance and school climate using publicly available California data. See full methodology.
How do Altadena schools compare to the state average?
Altadena elementary schools average a Scope Score of 36.1 vs. the statewide average of 43.8 (7.7 points below). The exceeded rate averages 16.7% vs. 21.6% statewide. Chronic absenteeism averages 27.3% vs. 18.1% statewide. Scores range from 27.0 to 41.9, a 14.9-point spread.
How many schools are in Altadena?
Altadena has 3 ranked elementary schools with Scope Scores. Schools are ranked using a weighted composite of CAASPP test performance, growth trajectory, chronic absenteeism, and suspension rate. Schools with insufficient testing data are not ranked.
What does the Scope Score measure?
The Scope Score is SchoolScope's proprietary composite rating (0–100) based on six dimensions of publicly available California school data: the exceeded-vs-met standard split, overall proficiency, grade 3–5 growth, chronic absenteeism, suspension rate, and ELPAC English Learner proficiency. Unlike single-number ratings, the Scope Score separates students who "exceeded" from those who "met" the standard — revealing whether a school pushes students beyond proficiency or paces toward it. Full methodology and weights.

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