Important Notes:
- Counties are included if at least two school districts participated at any grade level.
- In
most cases, the usage rates do not represent every school in the
county, but just the students at the participating schools, and only
those students who filled out a survey. Pay particular attention to the
introduction to determine how representative the report is.
- To see a listing of schools that participated in 2010, 2012, 2014 or 2016, visit our school participation page.
2018 County Reports
All
publicly available county reports are listed below and contain the full
array of questions asked on the IYS.
2016 County Reports
All
publicly available county reports are listed below and contain the full
array of questions asked on the IYS. For a snapshot of substance use
for all Illinois counties, see our "2016 IYS County Snapshot".
2014 County Reports
All
publicly available county reports are listed below and contain the full
array of questions asked on the IYS. For a snapshot of substance use
for all Illinois counties, see our "2014 IYS County Snapshot".
2012 County Reports
All
publicly available county reports are listed below and contain the full
array of questions asked on the IYS. For a snapshot of substance use
for all Illinois counties, see our "2012 IYS County Snapshot".
2010 County Reports
All
publicly available county reports are listed below and contain the full
array of questions asked on the IYS. For a snapshot of substance use
for all Illinois counties, see our "2010 IYS County Snapshot".