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allk12 · Rankings · Largest · Illinois · K-12 schools

The largest public K-12 schools in Illinois

This ranking covers the largest public K-12 schools in Illinois, drawn from 3 qualifying public K-12 schools. CICS - Longwood Campus leads the list at 1,137, against a median of 785 across the ranked schools.

The table below is sortable and filterable, and the full list downloads as a CSV. Figures come from federal NCES enrollment data and, where applicable, state assessment results for 2024-25.

Schools ranked
3
Illinois
Top Students
1,137
Median Students
785
LARGEST · ILLINOIS
#SchoolCityDistrictLevelStudents
1CICS - Longwood CampusChicago, ILChicago Public Schools Dist 299Combined1,137
2Horizon Science Acad-BelmontChicago, ILHorizon Science Acad-BelmontCombined785
3Edwin A Lee Elementary SchoolSpringfield, ILSpringfield SD 186Combined204
Page 1 of 1 · top 3 of 3 ranked. NCES + state assessment data, 2024-25.↓ Download full CSV

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DATA NOTICE

allk12 is independent and not affiliated with, endorsed by, or sponsored by NCES, the US Census Bureau, any state education agency or assessment program, or any other government agency. Source data is compiled from public records and provided "as is," without warranty of accuracy or completeness. You rely on it, and any analysis derived from it, at your own risk. See the full disclaimer.