Summary:
ZIP code 95948 has six schools—three elementary, one middle and two high schools—serving students from elementary through high school. Current all-grades test results are available for four schools; Esperanza High’s figures are suppressed and McKinley Elementary has no scores supplied; because schools serve different grade spans, all-grades comparisons are not perfectly like-for-like. Across the four schools with results, the 2025–26 ELA average was 52%, above the state’s 49%, while math averaged 33% versus 38% statewide and science 33% versus 36%—so math and science are the clearest area-wide concerns.
Gridley High led available ELA and science results, with 78% in ELA (29 percentage points above state) and 42% in science (6 points above). Manzanita Elementary led math at 43%, 5 points above state, and was narrowly above state in science. At the lower end, Wilson Elementary recorded 41% in ELA and 28% in math—8 and 10 points below state—while Sycamore Middle had the lowest science result, 24%, 12 points below state. High-school outcomes also differ sharply: Gridley’s graduation rate was 99%, compared with Esperanza’s 62%; their dropout rates were 0% and 39%, respectively.
Across the same four schools, average results fell from 2024–25 to 2025–26 in ELA (54% to 52%), math (36% to 33%) and science (37% to 33%), while state results rose in all three subjects; no school’s science score increased. Grade-level comparisons add useful detail: Manzanita beat Wilson in math by 18 to 30 points in grades 3–5, and at grade 8 it scored 50% in math versus Sycamore’s 33%. SchoolDigger’s rankings show a contrasting longer-term pattern: Gridley fell from the 90th to the 78th percentile and Wilson from the 58th to the 38th between 2023–24 and 2025–26, while Manzanita stayed near the 56th percentile. Reported free/reduced lunch eligible shares in 2024–25 ranged from 43% at Manzanita to 83% at Esperanza; these figures provide context, not an explanation of school results.
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