Summary
De Anza Middle is a 510-student school serving grades 7–8 in Ontario, California, within the Ontario-Montclair district. Its results are mixed, with eighth-grade math standing out as a strength, but science is the clearest concern: 21% of students were proficient in 2025–2026, compared with 27% in the district and 36% statewide.
Math is the school’s strongest subject compared with nearby schools: its all-grade proficiency rate was 35%, 8 points above the nearby average, and second among the 10 schools. It was still below the district’s 37% and the state’s 38%. The grade-level split is striking: eighth-grade math was 42%, above the state’s 36% and district’s 37%, while seventh-grade math was 27%, below the state’s 38% and district’s 33%. Science was second-lowest locally, and its 21% proficiency was 5 points below the nearby average of 26%. ELA was closer to the middle: 45% at De Anza versus 47% nearby, 46% in the district and 49% statewide.
Results have improved modestly over time, but progress is uneven: from 2022–2023 to 2025–2026, ELA rose 3 points, math rose 2 points overall but fell from 40% in 2024–2025, and science gained 1 point while its gap with the state widened by 5 points. Chronic absenteeism fell by 13 points, from 32% in 2021–2022 to 20% in 2025–2026, but remained 11 points above the district. SchoolDigger placed De Anza in the 49th statewide percentile and gave it 2 stars; its percentile was up 30 points since 2014–2015 but down 7 from the prior year. The 2024–2025 student-teacher ratio was 15.8, the lowest among nearby schools. In 2024–2025, 90.2% of students were free/reduced lunch eligible, close to the nearby average of 89.5%. SchoolDigger’s statewide subgroup measure placed Special Education Students at the 70th percentile in 2025–2026, compared with 49th overall; its latest reported English Language Learner result rose from the 38th percentile in 2021–2022 to the 71st in 2023–2024.
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