Summary:
ZIP code 91701 has 10 schools—seven elementary, one middle and two high schools—serving students from elementary through high school. In 2025–2026, the unweighted average across the schools was 17 percentage points above the state in ELA, 16 points above in math and 10 points above in science. Every school was above the state in ELA and math, while eight of 10 were above in science. The most important takeaway is that generally stronger-than-state results conceal meaningful differences among schools, particularly in science.
Standouts vary by subject: Floyd M. Stork Elementary led ELA at 75% and was second in math at 70%; Carleton P. Lightfoot Elementary led math at 72%; and Deer Canyon Elementary led science at 58%. At the other end, Alta Loma Elementary had the lowest ELA and science results, at 54% and 33%, while Alta Loma High had the lowest math result, 39%. The gaps between each subject’s leader and lowest scorer were 21 points in ELA, 33 in math and 25 in science.
Across the two test years, the schools’ average math result rose 2 points and its margin over the state widened 1 point; science rose 1 point but lost 3 points of ground relative to the state, while ELA barely changed. Grade-level results can also reveal exceptions: Alta Loma Elementary was above the state in all-grades math but below it in grade 3 math, at 44% versus 47%. SchoolDigger rankings moved up for Deer Canyon (78th to 82nd percentile) and down for Alta Loma High (86th to 71st). For context, the 2024–2025 free/reduced lunch eligible share ranged from 22% at Stork to 62% at Alta Loma Elementary; this is an observation, not an explanation of school results. All-grades comparisons span different grade levels, so same-grade results offer a closer comparison.
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