Summary:
Twin Lakes School Corp contains exactly one high school in this dataset: Twin Lakes Senior High School in Monticello, Indiana, which serves grades 9–12 to 620 students. Because there is only one high school in the corporation, there are no within-district school-to-school comparisons to make; the useful benchmarks are the district, the state, and the school's own results over time.
The school's graduation rate is a relative strength: 90.7% in 2024–2025, which is 1.0 percentage point above Indiana's 89.7% and equal to the district figure. Test results are more mixed. SAT Evidence-based Reading and Writing proficiency was above the state in 2024–2025 at 60.31% versus 54.5%, but fell to 47.4% in 2025–2026, when the state was 51.9% — a 12.91-point school decline and a swing from 5.81 points above the state to 4.5 points below it. SAT Mathematics remains a persistent weakness: 23.66% in 2024–2025 (1.74 points below the state) and 21.43% in 2025–2026 (4.17 points below the state). Biology proficiency rose from 24.42% to 31.16%, though the only year with a state comparison, 2024–2025, showed the school 21.18 points below Indiana's 45.6%.
Chronic absenteeism is the clearest red flag. At 23.6% in 2024–2025, the school rate is about 1.5 times the district's 16.0% and 1.4 times the state's 16.7% — 7.6 points above the district and 6.9 points above the state. The school's rank history has also moved downward, from 159 of 432, 63rd percentile, 3 stars in 2023–2024 to 224 of 415, 46th percentile, 2 stars in 2025–2026. For context, 55.65% of students qualify for free or reduced lunch, per-student spending is $12,659, and the student-teacher ratio is 12.2.
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