This report introduces systems for approving professional development providers as they currently operate in two State education agencies (SEAs) and two professions outside of education. It derives from a request that officials with the Massachusetts Department of Elementary and Secondary Education (DESE) made to the Reform Support Network (RSN) for assistance in examining provider approval systems in other States, as a step toward strengthening the Massachusetts system for K-12 educators. Specifically, DESE officials asked for help collecting information about policies and practices in other States as well as provider approval systems in other professions. The RSN team searched for information about this topic on the public Websites of the 18 Race to the Top grantee SEAs and several sources for the nursing and legal professions. The team then conducted short, informal interviews with staff members of several SEAs, the American Nurse Credentialing Center and the American Bar Association. This report examines the current practices of two SEAs--Delaware and Pennsylvania--and two organizations representing the professions of nursing and law. It does not offer a lengthy or rigorous research survey of the entire field. K-12 policies and practices are changing so rapidly that our goal here is mainly to introduce the topic and to guide readers toward more detailed information.