Summary:
ZIP code 62424 has two schools in Dieterich CUSD 30: Dieterich Elementary School, serving prekindergarten through grade 6 with 359 students, and Dieterich Junior/Senior High School, serving grades 7–12 with 273 students. The biggest academic contrast is in 2025–2026 IAR math: elementary scored 68% proficient, 28 points above the state’s 40%, while the junior/senior high scored 30%, 10 points below the state—a 38-point difference between the schools.
ELA is a shared strength, with both schools above the state: elementary scored 72% and the junior/senior high 70%, compared with 56% statewide. Elementary leads by just 2 points, and its sixth-grade results stand out: 93% proficient in ELA and 86% in math, respectively 34 and 49 points above state figures. SchoolDigger’s 2025–2026 rankings also place elementary higher, at the 82nd percentile versus the high school’s 81st, though the high school’s improvement over time is notable.
The high school’s ELA results improved substantially, rising 8 points from 2024–2025 to 2025–2026, compared with a 3-point state gain; its math result rose by only 1 point and remained below the state. SchoolDigger rankings show the high school climbing from the 49th percentile in 2023–2024 to the 81st in 2025–2026, while elementary stayed between the 82nd and 87th percentiles; both schools received four stars in 2025–2026. In 2024–2025, the high school had a lower student-teacher ratio (13.3 versus 15.2) and a higher share of students eligible for free/reduced lunch (36% versus 28%); these are contextual differences, not explanations for test results. Because the schools serve different grade spans, their all-grades scores are not same-grade comparisons.
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