This was just sent out by the district:
Dear District 202 Employees-
Please be aware that effective July 1, 2017, the Illinois income tax rate increased from 3.75% to 4.95%. Depending on your pay group, you will begin to see those changes to your state withholding July 28, 2017 or after. If you have questions, please contact the District 202 payroll department at firstname.lastname@example.org.
Director of Fiscal Services
Plainfield CCSD 202