Summary:
Schools in ZIP code 91205 include five schools in Glendale Unified: four elementary schools and Glendale High, which serves grades 9–12. The latest results show meaningful differences among the schools, with elementary schools leading or trailing depending on the subject. The clearest overall finding is that Horace Mann Elementary and John Muir Elementary are the strongest all-around performers, while Cerritos Elementary and John Marshall Elementary are below state levels in all three subjects.
Horace Mann leads the five schools in 2025–2026 ELA and math, with 61% and 56% proficient, respectively—12 and 18 points above state rates. John Muir leads science at 49%, 13 points above the state, and is also above state rates in ELA and math. At the lower end, John Marshall has the lowest ELA (35%) and science (21%), while Cerritos has the lowest math (26%); those results are 14, 15, and 12 points below state rates, respectively. Glendale High is below the state in proficiency, but its graduation rate is 97%, versus 88% statewide, and its dropout rate is 2%, versus 8%.
Recent trends are mixed: the five-school average in science moved closer to the state rate by 2 points from 2024–2025 to 2025–2026, while the average gaps in ELA and math widened by 4 and 1 points. Individual changes stand out: John Muir’s science score rose 21 points, while Horace Mann’s ELA and math scores fell 12 and 9 points, though it remains above state levels in all three subjects. SchoolDigger’s latest elementary rankings also put Horace Mann highest, at the 78th percentile, and John Marshall lowest, at the 29th. The elementary schools’ free or reduced-price lunch eligibility in 2024–2025 ranges from 63% to 67%, a fairly narrow span alongside the large score differences.
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