Summary:
ZIP code 91106 has two schools in Pasadena Unified, serving kindergarten through grade 12: Altadena Elementary (K–5) and Blair High (6–12). In 2025–26 all-grades results, Altadena had 57% proficiency in ELA, 50% in math, and 53% in science, while Blair had 37%, 23%, and 25%. The clearest finding is that Altadena was above state results in all three subjects, while Blair was below state results in all three.
Altadena Elementary stands out for its test results: it led Blair High by 20 percentage points in ELA, 28 in math, and 27 in science. Altadena exceeded state results by 8 points in ELA, 12 in math, and 17 in science; Blair was 12, 16, and 11 points below the state, respectively. Blair’s graduation and dropout measures tell a more favorable story: its 94% graduation rate was 6 points above the state, and its 6% dropout rate was 3 points below. Chronic absenteeism was higher than the state at both schools: 26% at Altadena and 22% at Blair, compared with 18% statewide. The schools have no tested grade in common, so their all-grades results are not same-grade comparisons.
Recent score trends also distinguish the schools: from 2024–25 to 2025–26, Altadena improved by 8 points in ELA, 5 in math, and 16 in science, while Blair declined by 6, 4, and 3 points. SchoolDigger’s statewide percentile rose from 62 to 74 for Altadena and fell from 70 to 32 for Blair; its star ratings changed from 3 to 4 stars for Altadena and from 3 to 2 for Blair. In 2024–25, Altadena’s student–teacher ratio was 23.4 and its free/reduced lunch eligible measure was 53%; Blair’s ratio was 18.3 and the same-year measure was 56%. These income figures are context, not an explanation for achievement differences.
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