CHSD 99
Downers Grove, Illinois · 4,775 students · 2 schools
Enrollment
4,775
Schools
2
Location
Downers Grove, Illinois
Schools in this district
Comm H S Dist 99 - South High SchDowners Grove, IL
2,637 students
Comm H S Dist 99 - North H SDowners Grove, IL
2,138 students
Methodology & sources
- NCES Common Core of Data (CCD) directory
- U.S. Dept. of Education EDFacts assessment results
- Illinois accountability framework (tier). Phase 1a uses math+ELA proficiency only with generic regime cutpoints; per-state component weights ship in Phase 1b. (as of 2026-05-27)
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Start learning free →About this profile. COSMIQ is an independent, free AI tutoring service and is not affiliated with, endorsed by, or sponsored by CHSD 99, Illinois, or any government education agency. All figures are drawn from public U.S. Department of Education data (NCES Common Core of Data and EDFacts). Any projected rating is an independent estimate, not an official score. COSMIQ does not collect or publish user reviews or ratings of schools.
Data last refreshed July 7, 2026.