Summary:
Kasson-Mantorville School District serves about 2,150 students across three schools in southeastern Minnesota: Kasson-Mantorville Elementary (prekindergarten through grade 4, 796 students), Kasson-Mantorville Middle School (grades 5–8, 685 students), and Kasson-Mantorville Senior High (grades 9–12, 671 students). The Kasson-Mantorville School District as a whole ranks 24th of 458 in Minnesota — the 95th percentile — and holds a 5-star rating, and every school scored above the state average in every reported subject in 2025–26.
Kasson-Mantorville Senior High is the district's flagship, earning 5 stars in each of the last three years, including a 97th-percentile ranking in 2024–25. Its 96.7% graduation rate and 0.6% dropout rate far exceed the state's 84.9% and 4.2%. Kasson-Mantorville Elementary is the math standout: 81.9% proficiency, roughly 37 points above the state, with both third and fourth grade above 80%. Reading is remarkably consistent across all three schools (57.6% to 59.6%, versus 48.6% statewide), which makes math the real dividing line.
Kasson-Mantorville Middle School is the relative weak spot, having slipped from 92nd percentile and 5 stars in 2023–24 to 82nd percentile and 4 stars in 2025–26. Its math (46.7%) is 10.4 points below the district, and science (26%) trails the district by 6 points, though reading remains strong at 59.4%. Class sizes are favorable — 13.6 students per teacher at the elementary and 17.2 at the middle and high schools — and free/reduced lunch rates are modest, ranging from 20.12% to 24.12%. Recent trends are mixed: elementary math improved, middle school math and science declined, and high school reading fell sharply from 72.11% to 59.6% but still sits 11 points above the state.
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