Summary:
Zip code 62037 has two schools serving very different grade spans: Grafton Elementary School serves pre-K–4 and has 171 students, while Il Youth Center - Pere Marquette serves grades 8–12 and has 12. The youth center’s 2025–26 school-level ACT results are suppressed, so its test performance cannot be compared with Grafton’s. The clearest academic finding is Grafton’s strong 2025–26 mathematics result: 68% proficient, compared with 40% statewide.
Grafton Elementary School was above the state in both all-grade IAR subjects in 2025–26, with ELA at 63% versus 56% statewide and mathematics at 68% versus 40%. Its grade 3 results were especially strong: 70% in ELA and 80% in mathematics, exceeding state results by 22 and 31 percentage points. Grade 4 was nearly even with the state in ELA (56% versus 56%) and 14 points higher in mathematics (56% versus 42%). Il Youth Center - Pere Marquette stands out instead for graduation: its 87% rate in 2025–26 was 29 points above IDJJ School District 428’s 58%, but 3 points below the state’s 90%.
Grafton Elementary School’s all-grade scores improved from 2024–25 to 2025–26: ELA rose from 53% to 63%, and mathematics from 56% to 68%. Its SchoolDigger percentile also rose, from 44 in 2023–24 to 64 in 2024–25 and 74 in 2025–26; these are rankings, not test scores. In 2024–25, Grafton’s student-teacher ratio was 20.4, compared with 2 at the youth center. Their low-income measures are different: Grafton reported 46% free/reduced lunch eligible, while all students at the youth center receive free meals (Community Eligibility); both measures are for 2024–25 and are not directly comparable.
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