Summary:
ZIP code 93643 has two North Fork Elementary (K–8, 227 students) and Mountain Oaks High (grades 9–12, 13 students), covering elementary through high school. The available 2025–2026 results show a mixed picture: North Fork is above state proficiency in science overall, but below it in ELA and math. Mountain Oaks’ supplied test scores are suppressed, so these data cannot establish which school has higher achievement. Most importantly, North Fork’s all-grade results conceal large differences between grades.
North Fork stands out most in eighth grade: proficiency was 76% in ELA, 48% in math and 64% in science, respectively 27, 11 and 28 percentage points above state results. Third grade was the clearest weak spot, with ELA at 18% versus 44% statewide and math at 18% versus 47%. Across all grades, science was a relative strength at 45% versus 36% statewide; ELA was 47% versus 49%, and math was 31% versus 38%. No evidence-based achievement leader or trailer can be named between the schools because Mountain Oaks’ scores are unavailable.
Results at North Fork changed unevenly from 2024–2025 to 2025–2026: ELA improved by 3 percentage points and science by 5, while math slipped by less than a point; its state advantage in science widened by 2 points, while the math gap widened by 1. SchoolDigger’s North Fork percentile was 30th, 39th and 30th across those same three school years. In 2024–2025, the schools had very different contexts: student–teacher ratios were 19.3 at North Fork and 4.4 at Mountain Oaks, and free/reduced lunch eligibility was 80% and 85%, respectively. In 2025–2026, chronic absenteeism was 24% at North Fork and 52% at Mountain Oaks, compared with 18% statewide; these are useful differences to consider, but they do not explain achievement results.
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