Karl is an accomplished practitioner in public administration. He has thirty years of experience in local government and five years as a consultant. His local government service includes city and county management positions in five states, as well as positions in financial management. He was President of the International City/County Management Association (ICMA). In addition, he is a Fellow in the Congressionally chartered National Academy of Public Administration (NAPA). Professor Nollenberger received his M.P.A. from the University of Colorado and Ph.D. from the University of Illinois.