This publication summarizes the findings from a three-year, W. K. Kellogg-funded demonstration involving partnerships at six sites that created Entrepreneurial Development Systems (EDSs) aimed at stimulating entrepreneurship and encouraging economic revitalization in their community. The publication explains the theory behind an EDS; examines the effects the funded EDSs had on entrepreneurs, their local economies and the policy environment surrounding them; and explores some of the challenges encountered and lessons learned through the demonstration.