- The Vocational Alliance is a partnership between the LaGrange Area Department of Special Education (LADSE), the Illinois Office of Rehabilitation Services (ORS), Riverside-Brookfield, Lyons Township, Hinsdale Central, and Hinsdale South High Schools. It's mission is to assist students with disabilities, in the DuPage/West Cook County area, by building a bridge between school, employment, and ...www.vocationalalliance.com