Law enforcement professionals across the United States share the same problem: they have significant numbers of people returning from prisons and jails to their communities with the majority of these returning prisoners likely to commit new crimes or violate the terms of their supervision. In response, an increasing number of law enforcement leaders are looking to reentry programs as part of a comprehensive effort to prevent reoffending and victimizations. The purpose of this publication is to initiate an informed discussion among law enforcement agencies and community partners regarding reentry strategies. It provides an overview of topics that should be considered and addressed within the development process. Reentry is a critical strategy for law enforcement and partner agencies’ efforts to prevent future crimes and victimizations. It is a natural extension of law enforcement’s community policing activities. Using proven problem-solving approaches, law enforcement professionals collaboratively identify the factors that drive recidivism, analyze the causes, and then develop and continually evaluate efforts that address reentry issues. This toolkit is organized into 10 elements that constitute an effective, comprehensive approach to any reentry initiative: (1) viability; (2) stakeholder involvement; (3) initiative’s priority population; (4) mission, goals, and performance measures; (5) initiative’s terms and participant identification; (6) information exchange and systems collaboration; (7) transition planning; (8) enhanced supervision; (9) organizational capacity; and (10) sustainability. The toolkit helps users examine the extent to which their law enforcement agency engages in specific activities to support reentry policies. Each element includes broad assessment questions to assist agencies in exploring the development of a reentry strategy. Any law enforcement agency whose community is receiving people released from prisons and jails knows it is responsible for trying to prevent reoffending and improving conditions in vulnerable neighborhoods. Appendixes A-C