He has served as president of the Federation of Texas Hospitals and district chair of the Capitol Area Council and is a board member for the Texas Society of Association Executives and the Round Rock Hospital. A member of the Westlake Rotary Club, Shields has participated in TASB s Grassroots Advocacy Process, Legislative Advisory Council, and Delegate Assembly. He runs a legislative consulting firm. TASB was established in 1949 to serve local Texas school districts.
School trustees are the largest group of publicly elected officials in the state.