Summary:
ZIP code 92821 has nine schools—six elementary, one middle and two high schools—serving students from elementary through high school in the Brea-Olinda Unified area. Across the eight schools with reported 2025–2026 results, average proficiency was 66% in English language arts (ELA), 61% in math and 51% in science, compared with state results of 49%, 38% and 36%. Brea Canyon High’s proficiency results are suppressed. The key takeaway is that area averages are strong relative to the state, but school results vary considerably—especially in science, where scores ranged from 32% to 69%.
Olinda Elementary is the clearest standout, leading the reported schools in all three subjects with 80% ELA, 80% math and 69% science; its ELA, math and science results are 31, 42 and 33 percentage points above the state. SchoolDigger ranks Olinda 197th among 5,804 elementary schools and awards it five stars. At the lower end, Arovista Elementary has the lowest reported math and science results—46% and 32%; its science score is 4 points below the state. Laurel Elementary Magnet School of Innovation and Career Explr has the lowest ELA result at 53%, still 4 points above the state.
Recent changes are mixed: the eight-school averages rose 1 point in ELA, 1 point in math and 4 points in science from 2024–2025 to 2025–2026, while Arovista improved in all three subjects and Mariposa Elementary’s ELA fell 5 points as its math rose 5. Context also differs across elementary schools: for 2024–2025, Olinda reported 25% free/reduced lunch eligible and Laurel 55%; Brea Country Hills Elementary reported 19% directly certified for free meals, a different measure. For families weighing attendance and graduation, Brea Canyon High had a 95% graduation rate but 64% chronic absenteeism, while Brea Olinda High had a 96% graduation rate and 10% chronic absenteeism.
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