Summary:
Zip code 54455 is served by a single public high school, Mosinee High, which enrolls 548 students in grades 9–12 and belongs to the Mosinee School District in central Wisconsin.
Mosinee High is a relatively strong school by state standards. In 2025–2026 it ranked 104 out of 533 Wisconsin high schools — the 80th percentile — with 4 stars, after ranking 94 out of 431 (78th percentile, 4 stars) in 2024–2025 and 38 out of 431 (91st percentile, 5 stars) in 2023–2024. That places it in the top quartile of the state, though below its earlier 5-star peak, and clearly ahead of the Mosinee School District overall, which earned 3 stars and the 54th percentile (198 out of 432). Outcomes back this up: a 97.4% graduation rate and a 0.0% dropout rate in 2024–2025, versus the state's 92.0% graduation and 1.1% dropout rates.
Academically, 10th-grade ACT results in 2025–2026 were well above the state in English Language Arts (64.35% vs. 48.47% proficient), Mathematics (56.52% vs. 42.93%), and Science (56.52% vs. 43.2%). ELA rose about 10.6 points year over year and Science about 5.8 points, while Math held steady near 14 points above the state. The main exception is Social Studies (Forward Exam), which fell from 59.29% — 11.62 points above the state — to 47.9%, slightly under the state's 48.25%. Chronic absenteeism, at 12.4%, is better than the state's 17.3% but higher than the district's 9.9%, making it the clearest area to watch. The school reports 17.34% free/reduced lunch, $15,899 per-student spending, and a 12.5 student-teacher ratio.
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