ExploreMapCompareBlogSign in

Elementary Schools in Altadena, California: Altadena schools aren't just reaching proficiency — they're pushing students beyond it.

Above Average2024–25 data4 schools · avg 51.1/100

Altadena, California has 4 ranked elementary schools with an average Scope Score of 51.1/100 — 7.8 points above the state average of 43.2. The highest-scoring school is Odyssey Charter at 68/100, where 52.3% of students exceed the state standard on the 2025 CAASPP assessment. Altadena schools average 32.8% exceeded standard (state: 21.3%) — this exceeded-vs-met distinction reveals whether schools push students beyond proficiency or pace toward it. Chronic absenteeism averages 25.0% (above the state average of 17.9%). Data source: California Department of Education CAASPP 2025, analyzed by SchoolScope.

Avg Scope Score
51.1
State avg: 43.2
SchoolScope composite
Score Range
29.0
39.2 – 68.2
Avg Exceeded %
32.8%
State avg: 21.3%
CDE CAASPP 2025
Chronic Absenteeism
25.0%
State avg: 17.9%
CDE Attendance 2025
Schools Ranked
4
With Scope Scores
LevelSchoolsAvg ScoreExceededvs State
Elementary4Solid
51.1/100
32.8%+7.8
Middle1Needs Support
24.1/100
7.3%-16.3

How Altadena schools compare

Altadena has 4 ranked elementary schools with an average Scope Score of 51.1/100 — 7.8 points above the state average of 43.2 (CDE CAASPP 2025).

The top-ranked school is Odyssey Charter with a Scope Score of 68 and 52.3% of students exceeding standard.

These schools are pushing students past the bar, not just to it. Altadena schools average 32.8% exceeding standard — well above the statewide average of 21.3%.

Chronic absenteeism in Altadena averages 25.0% — above the state average of 17.9%.

How we score · Exceeded 40% · Met+Exceeded 22% · Growth 15% · Absenteeism 10% · Suspension 5% · ELPAC 5% · Baseline 3%

School archetypes in Altadena

1 Strong All-Around3 Building Momentum

Archetypes are data-driven labels based on Scope Score dimensions. Learn more

For the data nerds

Every school in Altadena

ranked by Scope Score · 2024–25 CAASPP

#SchoolExceededScore
1Odyssey Charter
Los Angeles County Office of Education Strong All-Around
52.3%Solid
68/100
2OCS - South
Pasadena Unified Building Momentum
35.9%Solid
56/100
3Altadena Elementary
Pasadena Unified Building Momentum
23.1%Developing
41/100
4Mary W. Jackson STEAM Multilingual Magnet Elementa
Pasadena Unified Building Momentum
19.8%Developing
39/100
5Charles W. Eliot Middle
Pasadena Unified Building Momentum
7.3%Needs Support
24/100
Source: CDE CAASPP 2025 · 5 schoolsMethodology · Explore all schools

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

Numbers tell you whether students are clearing the bar. A school visit tells you whether they're happy doing it. These metrics are intentionally missing from the Scope Score: class sizes and student-teacher interaction quality; arts, music, athletics, and enrichment programs; teacher experience and turnover; campus safety and social-emotional support; parent and community engagement; quality of special education and gifted programs; how school zones and enrollment boundaries affect access. Full methodology

Frequently asked questions

Are the schools in Altadena good?
Altadena's 4 ranked elementary schools average a Scope Score of 51.1/100, which is 7.8 points above the state average. 32.8% of students exceed the state standard on average (state average: 21.3%). The Scope Score weights seven dimensions: exceeded standard (40%), met standard (22%), grade-level growth (15%), chronic absenteeism (10%), ELPAC proficiency (5%), suspension rate (5%), and baseline proficiency (3%). 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 Odyssey Charter with a Scope Score of 68/100 and 52.3% 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 51.1/100 — 7.8 points above the state average of 43.2. The exceeded rate averages 32.8% vs. 21.3% statewide. Chronic absenteeism averages 25.0% vs. 17.9% statewide.
How many schools are in Altadena?
Altadena has 4 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 seven dimensions of publicly available California school data: the exceeded-vs-met standard split, overall proficiency, grade 3–5 growth, chronic absenteeism, suspension rate, ELPAC English Learner proficiency, and baseline 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.

Related

All California SchoolsTop Schools in AltadenaLos Angeles County Office of EducationPasadena UnifiedZip 91001

Plus 18 licensed preschools. Browse preschools in Altadena →

← Explore all schools