Summary
Hamilton High is the comprehensive 9–12 high school serving the Hamilton School District in Sussex, Wisconsin — a Waukesha County community in the northwest-Milwaukee suburban belt — with 1,577 students, making it the largest high school in its immediate comparison set and effectively the district's only comprehensive high school.
The headline here is consistency. Hamilton has never ranked below the 95th percentile of Wisconsin high schools across ten reported school years, earning a 5-star rating every single year, including 13th of 533 schools (98th percentile) in 2025-26. On 2025-26 10th-grade assessments it posts double-digit-to-30-point margins over statewide proficiency in every subject: social studies 78.42% (state 48.25%), English language arts 75.14%, science 71.10%, and math 67.92%. Social studies is its standout strength, while math is its relative soft spot — though still 25 points above the state. Completion outcomes are excellent: a 98.5% graduation rate (highest among comparison schools), a dropout rate of 0.0–0.3% for five straight years, and chronic absenteeism cut nearly in half in one year, from 13.2% to 7.8%. Special education is the one clear weakness, at the 47th percentile with 2 stars — roughly average statewide and far below every other subgroup, which otherwise sit in a tight 91st-to-98th percentile band. Low-income students climbed from the 64th to the 91st percentile in a single year.
Among nearby schools, Hamilton belongs to an elite cluster with Brookfield East High, Brookfield Central High, and Pewaukee High, ahead of Germantown High and Menomonee Falls High, and well above West High in Wauwatosa. It achieves this on comparatively lean resources: $14,504 per student, less than Brookfield East, Brookfield Central, and Pewaukee, with 12.49% of students economically disadvantaged and a student-to-teacher ratio of 17.6.
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