David Greenberg has been the Director of Charter School Authorizing at the Audubon Center of the North Woods since January 2012. Leading the office of the largest authorizer in Minnesota, David has had the opportunity to visit and analyze performance of 34 schools throughout the state including a number of alternative programs, giving him a broad and deep view into trends in charter school performance. Prior to being at Audubon, David was the founding teacher and director of El Colegio Charter School, a small bilingual high school in Minneapolis, MN. He taught high school social studies in Spanish and English in St. Paul Public Schools and has experience teaching in Spain and Chile. David earned a Masters of Arts in Teaching from the University of Wisconsin – River Fall, and a BA from the University of Pennsylvania.