Summary:
Zip code 60477 has one high school, Tinley Park High School, serving grades 9–12 and enrolling 1,042 students. Because it is the only school in the supplied list, there is no within-area school comparison; results can instead be viewed against Illinois and Bremen CHSD 228. The clearest academic finding is that math results are consistently below the state, while ELA is near or above it.
Tinley Park High School stands out relative to the state in grade 9 and 10 ELA: its 2025–2026 scores were 4 and 3 percentage points higher, respectively. Grade 11 ELA was 5 points below the state, and all three math results fell short by 4 to 8 points; science results were about 1 to 2 points below. Completion measures are stronger: graduation was 94% compared with 90% statewide, while dropout was about 1 point lower. Chronic absenteeism was roughly level with the state, at 24% versus 24%, and 4 points below the district.
Results moved closer to the state overall: the average gap across nine matched measures narrowed by about 3 points, from 5 points below in 2024–2025 to 2 points below in 2025–2026. But progress varied: grade 9 and 10 ELA moved from below the state to above it, while grade 9 science fell from 55% to 46%, and grade 9 math’s state gap widened to 8 points. SchoolDigger’s statewide percentile was 59 in 2023–2024 and 55 in 2025–2026, a 4-point decline. The student–teacher ratio was 18.7 in 2024–2025; 27% of students were free/reduced lunch eligible in 2021–2022, an older figure best treated as context. The list includes only one school, so it cannot show how results vary among schools in the ZIP code.
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