In concept formation, the concept should be compatible with the goals of both the host organization and the broader criminal justice system; it should be shaped through study and research, and it should be refined through feedback from "stakeholders." The target population should be compatible with the concept's goals. The host organization should have the capacity to succeed and the authority to function. In program development, the following principles should be considered: (1) Support must be cultivated and resistance must be neutralized; (2) Required resources must be identified and the ability to secure them must be demonstrated; (3) Potential internal resistances must be identified, and strategies developed to build support; (4) Program staff must be empowered to conduct operations; and (5) Quality assurance mechanisms should be built into the design. The development and implementation of the Springfield Day Reporting Center (Massachusetts) is recounted.