Summary:
ZIP code 60505 has one listed high school, East High School, serving grades 9–12 and enrolling 4,020 students. Because it is the only school in this list, there is no meaningful school-to-school comparison. The most important finding is that East’s reported test proficiency was below Illinois’ in every tested subject and grade in 2025–2026.
East is both the highest- and lowest-performing school in this ZIP-code list by default, not because it leads or trails local peers. Across nine matched results, its scores were 20.5 to 27.4 percentage points below state results. For example, 11th-grade ACT English Language Arts proficiency was 23% at East versus 50% statewide, a 27-point gap; 10th-grade PreACT math was 16% versus 36%, a 21-point gap. Math was comparatively closest to the state across the three grade-and-test comparisons, but East’s average math proficiency was still 16%, compared with 39% statewide.
The overall test-score gap widened between the two reported years: East’s equal-weight average across the nine results fell from 26% in 2024–2025 to 23% in 2025–2026, and its average gap with the state widened by 2 points. ACT results moved slightly closer to state results, while all six grade 9 and 10 PreACT gaps widened. SchoolDigger lists East at rank 546 of 620, in the 12th percentile, with 1 star for 2025–2026; its percentile declined from 22 in 2023–2024 to 12. Attendance is another concern: chronic absenteeism was 55%, versus 34% in the district and 24% statewide. Graduation was less far below the state: 87%, compared with 90%. In 2024–2025, the school’s student-teacher ratio was 18.8, and 64% of students were free/reduced lunch eligible.
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