Summary:
High schools in zip code 94571 comprise one listed school, Rio Vista High, which serves grades 9–12 and enrolls 317 students. Its 2025–2026 results show a mixed academic picture: ELA proficiency is 43%, compared with 49% statewide, while math is 7% versus 38% statewide and science is 16% versus 36%; math is the clearest concern, trailing California by 31 percentage points.
Because it is the only school listed, Rio Vista High is the sole school-level standout, not a proven leader or laggard among local peers. ELA is its strongest tested subject: the school is 5 points above River Delta Joint Unified in all-grades ELA, but is 14 points below the district in math and 9 points below in science. Beyond test scores, the graduation rate is 96%, 8 points above California’s 88%, while chronic absenteeism is 25%, 7 points above the state’s 18% and 6 points above the district’s 20%. These different measures suggest stronger graduation outcomes alongside an attendance concern.
Recent scores improved in ELA but weakened in math and science: from 2024–2025 to 2025–2026, Rio Vista High’s ELA proficiency rose from 36% to 43%, narrowing its state gap by 6 points; math fell from 14% to 7%, and its state gap widened by 8 points; science fell from 20% to 16%, widening its gap by 7 points. SchoolDigger gives the school a 1-star rating and ranks it 1,538th of 2,137 California schools, at the 28th percentile; its percentile ranking rose from 14th in 2023–2024 to 34th in 2024–2025 before declining to 28th. The school’s student–teacher ratio is 16.7 (2024–2025), and 72% of students were free/reduced lunch eligible in 2024–2025. With only one school in the list, there is no local school-to-school comparison.
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