Summary:
Sisseton School District 54-2 has one high school, Sisseton High School - 01, serving grades 9–12 with 304 students. The school’s 2024–2025 student-teacher ratio was 14.8:1, and 53% of students were free/reduced lunch eligible that year. The clearest academic concern is mathematics: on the 2025–2026 grade 11 SD ACT, 13% met proficiency compared with 34% statewide, a 21-point gap.
There is no school-to-school leader or bottom performer in this one-school area. Within the school, ELA is its strongest subject relative to the state on both assessments, although it remains below state results: 37% versus 48% on the ACT, and 45% versus 51% on 2024–2025 Smarter Balanced. ELA is also a local bright spot: its Smarter Balanced result was 10 points above the district’s 35%, while still 6 points below the state. On Smarter Balanced, math and science were both about 17 points below the state. Graduation was 84% compared with 88% statewide, while the dropout rate was 4% compared with 2% statewide.
SchoolDigger rates the school 0 stars and ranks it 118th of 130 statewide high schools, at the 9th percentile in 2025–2026. Its percentile placement was at the 23rd percentile in each of the previous two years, so the latest ranking is 14 percentile points lower; this is a ranking change, not a measure of how much test scores changed. The results do not show a year-over-year score trend because the reported scores are from different assessments and years. For families weighing the available information, ELA is the relative academic strength, while math is the clearest area of concern.
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