Summary:
Lisle CUSD 202 has three schools serving preschool through grade 12: Lisle Elementary School (PK–5), Lisle Junior High School (6–8) and Lisle High School (9–12). The clearest districtwide strength is that all 15 reported 2025–2026 test results were above the state result for the same subject, grade and test, with advantages ranging from 8 to 27 percentage points.
Lisle Elementary stands out in grade 5 science: 74% proficient, 27 points above the state, up 14 points from the prior year. Lisle Junior High has the strongest all-grades IAR ELA result, at 78% versus 56% statewide, a 21-point advantage. Lisle High School stands out in grade 9 PreACT math and science, ahead of the state by 26 and 25 points, respectively. Its smallest reported advantage is grade 11 ACT science: 56% versus 48%, or 8 points. Because the schools’ reported results cover different grades and tests, these strengths do not establish a fair overall school-to-school ranking.
Recent results are mixed: Lisle High School’s grade 11 ACT scores fell in all three subjects, by 9 to 19 points, while its grade 9 and 10 math and science results improved; grade 9 ELA declined. Lisle Elementary’s science improvement contrasts with a 1-point dip in math, and Lisle Junior High’s grade 8 science result fell 5 points. SchoolDigger ranks the district 100th of 738 (86th percentile, four stars); its latest school percentiles are 91st for the high school, 82nd for the elementary school and 81st for the junior high. In 2024–2025, student–teacher ratios were 11.1, 13.9 and 10.7, respectively; free/reduced lunch eligible shares were 35%, 28% and 33%. Chronic absenteeism in 2025–2026 was highest at the high school (22%), versus 14% at the elementary school and 15% at the junior high.
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