Summary:
ZIP code 46118 in Clayton, Indiana is served by three public schools, all within Mill Creek Community School Corp: Mill Creek East Elementary (grades K–5, 359 students), Cascade Middle School (grades 6–8, 332 students), and Cascade Senior High School (grades 9–12, 537 students), totaling 1,228 students. No alternative schools are listed. The district is a top performer, ranking 31st of 374 Indiana districts — the 92nd percentile — with a 5-star rating.
All three schools rank in the top 17% of Indiana schools in 2025–2026 and each holds 4 stars. Mill Creek East Elementary stands out most: 142 of 1,015 schools (86th percentile), up sharply from the 66th percentile a year earlier, with the lowest chronic absenteeism at 3.4% and the strongest all-grade results — 71.35% proficient in math, 58.99% in ELA, and 61.43% in science, all above district and state. Cascade Middle School improved to the 84th percentile (80 of 486) and beats the state in 7th- and 8th-grade ELA and most math grades, though 6th-grade ELA (34.51%) is below the state's 41.3% and all-grade results trail the district. Cascade Senior High School ranks in the 83rd percentile (70 of 415) with a 97.6% graduation rate, 7.9 points above the state, and SAT reading proficiency of 71.32% versus the state's 51.9%. SAT math, at 27.13%, is only slightly above the state's 25.6%, and biology results fell from 63.7% to 52.31%.
Chronic absenteeism rises with grade level — 3.4% at the elementary, 7.5% at the middle school, and 11.3% at the high school — yet all remain below the state's 16.7%. Notably, the elementary has the highest free/reduced lunch rate (35.1%), the largest student–teacher ratio (15.1), and the highest per-student spending ($12,386), while also producing the strongest outcomes.
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