ER&D Course Offerings Welcome!  Posted on this page you will find information about the ER&D courses offered by the Lake County Federation of Teachers. Summer 2021 ER&D Apr 23, 2021 Download: ER&D 2021 Class Info in for 504 Registration form FOR SUMMER 2021 (1).pdf Page Last Updated: Apr 23, 2021 (12:11:24)