Summary:
ZIP code 55398 (Zimmerman, Minnesota) is served by a single high school: Zimmerman High School, a grades 9–12 comprehensive school with 704 students at 25900 4th St W. It belongs to the Elk River Public School District, which ranks 37 of 458 districts in Minnesota (92nd percentile, 5 stars). The school itself ranks 87 of 473 Minnesota high schools for 2025-2026 — the 82nd percentile, 4 stars — and its rank has climbed each of the past three years (112 → 93 → 87).
Science is the standout: 45.3% proficiency (End of Course), which is 19.8 points above the state (25.5%) and 15.2 points above the district (30.1%), and it is the only subject that improved year over year (42.46% → 45.3%). Completion outcomes are also strong: a 94.5% graduation rate (2024-2025) beats the district's 89.0% and the state's 84.9%, while the 3.3% dropout rate is below both the district (3.7%) and the state (4.2%). Reading at 50.4% is modestly above the state (48.6%) and above the district's 10th-grade figure (46.1%); it only looks weak next to the district's all-grades reading number, which is lifted by earlier grades.
Math is the clear weak spot. At 38.6%, it trails the state (44.9%) and fell from 49.35% the prior year — a 10.8-point drop against a statewide move of just −0.31. The district's all-grades math figure of 60.5% overstates the gap; compared with the district's 11th-grade math (47.9%), the school is 9.3 points behind. High school testing happens in single grade levels, so these scores reflect one cohort rather than an average, and a rising rank alongside softening scores reflects relative standing, not absolute improvement. With free/reduced lunch at 21.31% and a student-teacher ratio of 25.8, that context is worth weighing.
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