Schools in 91001 — Altadena, California: 9 schools. Average score 2.2 points below the state. Here is what that number does — and doesn't — tell you.
91001 has 9 ranked schools in Altadena, averaging a Scope Score of 42.6/100 — 2.2 points below the state average of 44.8 (CDE CAASPP 2025). Scores range from 17.9 to 65.9, a 48.0-point spread.
How 91001 schools perform
The top-ranked school is Odyssey Charter with a Scope Score of 66 and 52.3% of students exceeding standard.
These schools are pushing students past the bar, not just to it. Schools here average 22.1% exceeding standard — well above the statewide average of 21.3%.
Chronic absenteeism across 91001 averages 26.2%, above the state average of 17.9%. CDE CAASPP 2025.
How 91001 compares to nearby zip codes
| Zip | City | Schools | Avg Score | vs 91001 |
|---|---|---|---|---|
| 91001 | Altadena | 9 | Developing 42.6/100 | — |
| 91006 | Arcadia | 6 | Solid 60.5/100 | +17.9 |
| 91007 | Arcadia | 6 | Solid 65.1/100 | +22.4 |
| 91010 | Duarte | 7 | Developing 47.0/100 | +4.3 |
| 91011 | La Canada | 4 | Strong 82.8/100 | +40.2 |
Source: CDE CAASPP 2025, analyzed by SchoolScope.
School archetypes in 91001
Hidden gems: 3 schools in 91001 are classified as Growth Engine (2) or On the Rise — showing positive growth trajectories that raw proficiency scores alone don't capture. These are schools where students leave with more than they arrived with.
Archetypes are data-driven labels based on Scope Score dimensions. Learn more
All schools in 91001
ranked by Scope Score · 2024–25 CAASPP
| # | School | Exceeded | Score |
|---|---|---|---|
| 1 | Odyssey Charter Los Angeles County Office of Education Building Momentum | 52.3% | Solid 66/100 |
| 2 | OCS - South Pasadena Unified Growth Engine | 35.9% | Solid 58/100 |
| 3 | Aveson School of Leaders Pasadena Unified Growth Engine | 24.4% | Solid 56/100 |
| 4 | Altadena Elementary Pasadena Unified Building Momentum | 23.1% | Developing 42/100 |
| 5 | Mary W. Jackson STEAM Multilingual Magnet Elementa Pasadena Unified Building Momentum | 19.8% | Developing 40/100 |
| 6 | Alma Fuerte Public Los Angeles County Office of Education On the Rise | 11.1% | Developing 37/100 |
| 7 | Aveson Global Leadership Academy Pasadena Unified Building Momentum | 17.1% | Developing 35/100 |
| 8 | Charles W. Eliot Middle Pasadena Unified Building Momentum | 7.3% | Developing 31/100 |
| 9 | Pasadena Rosebud Academy Pasadena Unified Building Momentum | 8.3% | Needs Support 18/100 |
Schools in 91001 on the map
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.
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