Summary:
Schools in zip code 93016 include seven schools in Fillmore Unified: three elementary schools, a middle school, two high schools and an alternative school, with enrollment ranging from 32 to 1,007. In 2025–2026, the schools’ average proficiency was 29% in English language arts (ELA), 18% in math and 19% in science, compared with state figures of 49%, 38% and 36%. The central finding is that all three school averages trail the state—by 21 points in ELA, 21 in math and 17 in science.
Different schools stand out by subject. Fillmore Senior High led in all-grades ELA at 50%, compared with 25% on average for the other six schools and 49% statewide. Rio Vista Elementary led in math at 34%, versus 15% for the other schools and 38% statewide; its fourth graders also scored 52% in ELA and 48% in math, above same-grade state results of 46% and 42%. Mountain Vista led in science at 26%, while its fifth graders were above the state in math. At the low end, Sierra High had the lowest result in each subject: 8% in ELA, 3% in math and 5% in science. Its chronic absenteeism was 51%, and Heritage Valley Independent Study reported 55%, compared with 18% statewide. Fillmore Senior also had a 99% graduation rate, versus 88% statewide.
Recent changes favor science: the seven-school average rose 4 points from 2024–2025 to 2025–2026, while ELA fell 2 points and math rose 1; the state gained 3 points in science and about 1 point in each other subject. SchoolDigger’s rankings moved in different directions: Mountain Vista rose from the 26th to the 35th percentile, while Fillmore Senior fell from the 44th to the 33rd. As context, the schools’ free/reduced lunch eligible measure for school year 2024–2025 ranged from 57% at Rio Vista to 87% at Mountain Vista among the elementary schools; this is an observation, not an explanation of results. Sierra has a lower student-teacher ratio than Fillmore Senior—12.8 compared with 21.5—despite much lower proficiency, another reminder that school characteristics alone do not predict outcomes.
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