Summary:
ZIP code 60563 has two high schools: Naperville North High School, serving grades 9–12 with 2,467 students, and Illinois Youth Center-Warrenville, serving grades 8–12 with 34 students. The schools differ greatly in size and setting. The clearest overall finding is that Naperville North’s reported results are well above state benchmarks, while Illinois Youth Center-Warrenville’s suppressed ACT results leave its test-score standing unknown.
Naperville North stands out for both test results and graduation: across nine matched 2025–2026 test comparisons, its average proficiency was 74%, compared with 47% statewide, an advantage of 26 points. Its largest subject advantage was in mathematics, averaging 28 points above the state; its English language arts and science advantages averaged 24 and 27 points. Its graduation rate was 95%, versus 90% statewide. Illinois Youth Center-Warrenville had a 44% graduation rate—52 points below Naperville North and 46 points below the state rate.
Naperville North’s scores generally slipped year over year, though one result rose: its average across the nine comparisons fell by 3 points, from 76% in 2024–2025 to 74% in 2025–2026, while grade 9 PreACT mathematics increased by 6 points. Its average lead over the state narrowed from 28 to 26 points. SchoolDigger ranked it 30th of 620 schools in 2025–2026, compared with 23rd the prior year; its listed percentile moved from 97 to 95. Other context varies sharply: in 2024–2025, free/reduced lunch eligible shares were 19% at Naperville North and 79% at Illinois Youth Center-Warrenville, a 61-point difference. Student-teacher ratios were 12.5 and 3.7, respectively; these figures describe the schools but do not explain their outcomes.
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