State Reports

Statewide Frequency Reports

A critical goal of administering the IYS is to provide a scientific estimate of health and social indicators for the state of Illinois. The scientific estimate is based on randomly drawn, scientifically weighted sample of survey participants, selected to represent the state population of 8th, 10th, and 12th graders in Illinois’ public schools. The sampling design assures that youth in the state sample are representative of the state’s diverse community types, defined based on the “urbanicity” of the school’s setting. To read more about IYS sampling, click here.

How Community Types are Assigned

Each county in Illinois is assigned a community type based on the Federal Office of Management and Budget’s definitions of Metropolitan Statistical Areas (MSAs). Because Cook County is a blend of the City of Chicago and suburban communities, the City of Chicago schools are sampled and reported as a separate community type. The four Illinois community types:

  • City of Chicago
  • Suburban Chicago Counties including Suburban Cook, DeKalb, DuPage, Grundy, Kane, Kendall, Lake, and Will
  • Other Urban/Suburban Counties excluding Suburban Chicago Counties
  • Rural Counties

The reports below can be used to easily compare statewide data to school, district, county, and community area frequency reports. They contain the full array of questions asked on the IYS.


2018 Illinois Youth Survey Frequency Reports (All survey items)
2018 IYS Frequency Report - Statewide
2018 IYS Frequency Report - Chicago
2018 IYS Frequency Report - Suburban Chicago Counties
2018 IYS Frequency Report - Rural Counties
2018 IYS Frequency Report - Urban/Suburban Counties (excluding Chicago metro suburban counties)

For prior year reports, visit our archives.