Sub Hub: Your Resource for IPSD 204 Substitute Information Already a Substitute in the District? Download the 2020-2021 Substitute Handbook. Complete the GCN online mandated training modules by the due dates. Ensure that your Teaching License, Substitute License or Paraprofessional License is current and registered in DuPage County and updated on Lawson Self-Service. Questions can be directed to the DuPage Regional Office of Education (630) 407-5800 Need to update with a name or address change? Change in Personal Information Form Guest Teacher Academy Resources: Smartboard Basic Instructions Technology 101 - Navigating through a 204 Classroom Digital Classroom Resources Using Technology to Leverage Classroom Instruction Guest Teacher 101 General Resources: Absence Management (Aesop) Website Time and Attendance Website GCN Training Instructions Teachers' Retirement System (TRS) As a Guest Teacher or Guest Teaching Assistant you are not eligible for district-provided medical insurance. The Illinois Marketplace is now available to the uninsured and those who purchase individual coverage. Please feel free to contact Payroll or HR with a question. Click here for a simplified, text-only version of this page.