Summary:
ZIP code 95448 has six schools serving students from elementary through high school: three elementary schools, one junior high and two high schools. The five schools with reported 2025–2026 test results averaged above state proficiency in English, math and science, but results differed widely from one school to another. The clearest standout is West Side Elementary, which led the schools with reported results in all three subjects.
West Side Elementary scored 85% in English, 86% in math and 94% in science—about 8, 21 and 45 percentage points ahead of the next-highest school in each subject. Alexander Valley Elementary was also strong, with 77% in English and 65% in math, and results above the state in all three subjects. The lowest reported scores varied by subject: Healdsburg Elementary had the lowest English result at 47%; Healdsburg High had the lowest math result at 26%, 13 points below the state; and Healdsburg Junior High had the lowest science result at 36%.
Across the five schools with results, average math proficiency rose 4 percentage points from the prior year, while science fell 6 points and English was nearly unchanged. Changes were not uniform: Healdsburg Junior High math rose 16 points, while Alexander Valley Elementary science fell 25 points. SchoolDigger ranks West Side at the 98th statewide percentile with five stars; Alexander Valley is at the 86th percentile with four stars, while Healdsburg High is at the 68th with three stars. The 2024–2025 free/reduced lunch eligible measure ranged from 25% at Alexander Valley to 74% at Healdsburg Elementary; it is useful context, not an explanation for score differences. Marce Becerra Academy’s test scores are suppressed, so it cannot be compared on proficiency.
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