Summary
South Dearborn High School is a public high school in Aurora, Indiana, serving grades 9–12 in the South Dearborn Community School Corp, with 625 students. In 2025–26 it ranked 131 of 415 Indiana high schools — the 68th percentile — earning 3 stars, a dramatic turnaround from 2015–16, when it sat at 337 of 394 (14th percentile, 1 star), and from 2022–23, when it ranked 313 of 398. Among nearby schools, South Dearborn is second only to East Central High School (54 of 415, 87th percentile, 4 stars) and essentially tied with South Ripley High School (138 of 415), while ranking ahead of Milan High School, Lawrenceburg High School, and Rising Sun High School.
That improvement is real but uneven. Graduation stands at 93.7%, above Indiana's 89.7% but below every nearby high school — Lawrenceburg (98.8%), Milan (98.7%), Rising Sun (98.0%), South Ripley (96.4%), and East Central (96.4%). Chronic absenteeism is the clearest concern: 24.1% of students, the highest among nearby schools and well above the South Dearborn Community School Corp rate of 14.1% and the state's 16.7%. In reading, South Dearborn's SAT Evidence-Based Reading and Writing score of 54.14% is above the state's 51.9% and above all nearby schools except East Central. SAT Math, at 23.57%, is below the state's 25.6%. Biology ILEARN proficiency is 46.83%, up from 5.88% in 2022–23.
South Dearborn also stands out for how well it serves students who often lag behind elsewhere. Low-income students rank in the 77th percentile and special education students in the 76th percentile — both 4-star results above the school's overall 68th percentile. The school's resources look favorable: a student-teacher ratio of 13.7 is lower than South Ripley, East Central, and Lawrenceburg, and per-student spending was $13,199 in 2023–24, with 38.4% of students eligible for free or reduced lunch. Notably, the school's 68th percentile sits above its district's 59th percentile, suggesting the high school performs stronger than its district context might imply.
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