Summary
Harrisburg High School - 01 serves 1,806 students in grades 9–12 in Harrisburg, South Dakota, with nearby comparison schools in Sioux Falls and Tea. Its completion results are strong: 94% of students graduated in 2025–2026, matching the Harrisburg School District 41-2 and exceeding the state’s 88%. But test results are uneven, and the clearest concern is mathematics, where the school fell well behind the state and nearby comprehensive high schools.
English language arts is the school’s strongest area compared with the state and district, while math is its weakest. On 2025–2026 11th-grade ACT results, ELA proficiency was 52%, 4 points above the state, and science was 45%, about even with the state; math was 31%, 3 points below. The district’s ACT results matched the school’s. On 2024–2025 all-grades Smarter Balanced results, ELA and science were also above the state, by 12 and 6 points, while math was 10 points below. Yet compared with Roosevelt High School - 03, Lincoln High School - 02, and Tea Area High School - 03, Harrisburg was below their average in every Smarter Balanced subject: by 7 points in ELA, 10 in math, and 11 in science.
Smarter Balanced results declined from 2022–2023 to 2024–2025: ELA fell 8 points, math 10, and science 8. Most notably, math shifted from 1 point above the state to 10 points below. SchoolDigger’s statewide standing also fell, from the 75th percentile and 4 stars in 2023–2024 to the 42nd percentile and 2 stars in 2025–2026. Harrisburg’s 14.2 student-teacher ratio is lower than the nearby comprehensive schools’ ratios of 16.4–19.5, but that has not coincided with stronger test scores. The school reported 16% free/reduced lunch eligible in 2024–2025, close to Tea Area’s 16%. SchoolDigger ranked how well Harrisburg serves students in foster care at the 96th percentile in 2024–2025. Its Low Socio Economic Status Students ranking was at the 25th percentile in 2025–2026, down from the 44th percentile in 2023–2024.
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