Summary:
ZIP code 54204 contains one high school—Southern Door High—in Brussels, WI, serving grades 9–12 with 304 students in the Southern Door County School District. As the only high school in the ZIP, it is a single-school profile: a small high school with an 11.9 student-teacher ratio and $16,501 per-student spending, and 27.63% of students receive free or reduced-price lunch.
Academically, Southern Door High is consistently strong. It earned 4 stars in all three recent rank-history years, ranking 96 out of 533 (82nd percentile) in 2025–2026, 62 out of 431 (86th percentile) in 2024–2025, and 110 out of 431 (74th percentile) in 2023–2024. Its 2024–2025 outcomes include a 100% graduation rate, matching the district and exceeding the state’s 92.0%, and a 0.3% dropout rate, far below the state’s 1.1%. Chronic absenteeism is 15.4%, better than the state’s 17.3% but higher than the district’s 10.4%.
In 10th-grade proficiency, the school is above the state in most subjects. In 2025–2026, Social Studies was 67.61% vs. 48.25% state, ELA 58.62% vs. 48.47%, and Math 56.90% vs. 42.93%. Science was 43.10% vs. 43.20% state, essentially at the state average and the one subject not above it. In 2024–2025, the school was above the state in all four subjects: Social Studies 63.33% vs. 47.67%, ELA 64.63% vs. 48.62%, Math 62.20% vs. 42.73%, and Science 50.00% vs. 43.42%. Year-over-year, Social Studies rose 4.28 points, while ELA, Math, and Science declined 6.01, 5.30, and 6.90 points. Overall, Southern Door High combines high graduation/dropout performance and strong test proficiency, with chronic absenteeism as the clearest area where it trails its own district.
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