Summary:
Zip code 60183 has one listed school, Wasco Elementary School, serving grades K–5 and enrolling 466 students; the area’s school results therefore describe this school alone. In 2025–2026, Wasco’s all-grades proficiency was 72% in ELA and 63% in math, compared with 56% and 40% statewide. Its clearest overall strength is that it exceeded state results in both subjects, especially math: its state advantage was 16 percentage points in ELA and 23 points in math.
As the only listed school, Wasco is the area’s standout by default, rather than one school among local top and bottom performers. It was below St Charles CUSD 303 in all-grades ELA by 7 percentage points and in math by 5, despite being above the state in both. Its strongest grade-level state comparisons were grade 4 math, 30 points above the state, and grade 5 ELA, 25 points above. Results were not as strong against the district: grade 3 ELA and math were each 11 points lower, and grade 5 math was 13 points lower. Wasco’s state margins were positive in every reported grade and subject, but it did not lead the district across all grades.
Wasco’s all-grades scores fell from 2024–2025 to 2025–2026: ELA declined by 2 percentage points and math by 5, while state results rose by 3 and 1 points, respectively. As a result, its state advantage narrowed from 21 to 16 points in ELA and from 29 to 23 in math. Grade 5 science also remained above the state, but its margin narrowed from 23 to 14 points as Wasco’s score fell and the state’s rose. SchoolDigger ranked Wasco 345th of 1,737 Illinois schools, at the 80th percentile with four stars in 2025–2026; its percentile was down 9 points from the prior year. Chronic absenteeism was 10%, below the district’s 15% and the state’s 24%. Other context figures are a 16.3:1 student-teacher ratio and, in 2024–2025, 13% free/reduced lunch eligible.
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