Summary
Plano High School is a public school in Plano, Illinois, serving grades 9–12 with 757 students, and is one of six area high schools compared here. Its most important challenge is that its test results were below the state rate in every subject and grade reported for 2025–2026.
On the 11th-grade ACT, the school’s strongest comparison with the state was English language arts (ELA): 44% proficiency, 6 points below the state. Math was 33%, 7 points below, and science was 41%, 7 points below. Its district, Plano CUSD 88, had the same rates. Against nearby-school averages, Plano was closest in math, trailing by 5 points; its largest gap was in science, at 10 points. It ranked lowest among the six schools in ACT ELA and math; only Hinckley-Big Rock High School scored lower in science. Graduation is a relative bright spot: 90% at Plano, about 1 point above the state, though four nearby schools had higher rates. Chronic absenteeism was 24%, about 1 point above the state and 6 points above the district.
Recent results are mixed: from 2024–2025 to 2025–2026, ACT ELA rose 3 points and math rose 9, while PreACT ELA declined in grades 9 and 10 and grade 10 math also fell. SchoolDigger’s statewide ranking dropped from the 53rd percentile in 2023–2024 to the 45th and then the 31st percentile in 2025–2026; its latest rating is 2 stars. In 2024–2025, its student-teacher ratio was 13.4, compared with a nearby-school average of 12.5. Also that year, 50% of students were free/reduced lunch eligible—the highest share among the nearby schools. These are context measures, not explanations for test results. SchoolDigger’s statewide percentile for how well the school serves English Language Learner Students was 20 in 2024–2025, down from 51 in 2022–2023. Its percentile for African American Students was 63, compared with 45 overall in 2024–2025.
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