Summary:
Southern Door County School District includes exactly one high school — Southern Door High in Brussels, Wisconsin — which serves grades 9–12 and enrolls 304 students. Because it is the district's only high school, families should read its results as both the school's and the district's high-school story, with comparisons made to district and state averages rather than to other local high schools.
The school is consistently strong by state standards. The district is rated 4 stars and ranks 71st of 432 Wisconsin districts, placing it in the 84th percentile, and Southern Door High itself earned a 4-star rating in each of the last three years, landing between the 74th and 86th percentiles statewide. Completion outcomes are its standout: a 100% graduation rate in 2024–2025 versus 92% statewide, and a 0.3% dropout rate versus the state's 1.1%. Chronic absenteeism is 15.4% — below the state's 17.3% but 5.0 points above the district's 10.4%, suggesting absenteeism runs higher at the high-school level than across the district overall. Context measures show 27.63% of students qualifying for free/reduced lunch, $16,501 in per-student spending, and an 11.9:1 student-teacher ratio.
On 2025–2026 testing, students exceeded state proficiency in three of four subjects: Social Studies at 67.61% (versus 48.25% statewide, +19.36 points), Mathematics at 56.90% (versus 42.93%), and ELA at 58.62% (versus 48.47%). Science was 43.10%, essentially even with the state's 43.20% and the clearest watch item — it was 50.00% the year before. Year over year, Social Studies improved 4.28 points, while ELA fell 6.01, Mathematics 5.30, and Science 6.90; state scores were nearly flat in that period, so the declines appear school-specific rather than statewide.
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