Summary:
ZIP code 54840, in the Grantsburg area, is served by one public high school, Grantsburg High, which serves grades 9–12 as part of the Grantsburg School District. With 273 students, it is the only high school in the ZIP, so the most useful comparisons are between this school, its district, and Wisconsin statewide averages.
The school’s strongest outcomes are completion-related: its 96.8% graduation rate in 2024–2025 is above the district’s 83.4% and the state’s 92.0%, and its dropout rate is 0.0%, compared with 2.3% district and 1.1% state. Students also exceeded the district in every tested subject in both years. In 2025–2026, Social Studies was 50.75% versus 48.25% statewide, and Math was 43.08% versus 42.93% statewide; ELA was 43.08% versus 48.47%, and Science was 43.08% versus 43.20%. In 2024–2025, Social Studies was a standout at 65.57% versus 47.67% statewide, while ELA and Science lagged state averages. Year over year, ELA, Math, and Science all improved, though Social Studies declined.
The school’s ranking improved from 1 star and the 24th–26th percentile in 2023–2024 and 2024–2025 to 3 stars and the 53rd percentile in 2025–2026. Chronic absenteeism is 16.6%, slightly below the state’s 17.3% but well above the district’s 6.0%, making attendance a key area to watch. Context measures include 37.73% free/reduced lunch, $13,577 per-student spending, and a 14.9 student-teacher ratio in 2024–2025; the dataset does not provide district or state comparators for those three figures.
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