The philosophical principles of wraparound have long provided the basis for understanding this innovative and widely-practiced service delivery model. This value base for working in collaboration and partnership with families extends from wraparound’s roots in programs such as Kaleidoscope in Chicago, the Alaska Youth Initiative, and Project Wraparound in Vermont. In 1999, a monograph on wraparound was published that presented 10 core elements of wraparound, as well as 10 practice principles, from the perspective of wraparound innovators. For many, these original elements and principles became the best means available for understanding the wraparound process. They also provided an important basis for initial efforts at measuring wraparound fidelity.