Children and Family Futures offers training and technical assistance to tribes, states, counties, and communities on improving cross-systems collaboration on behalf of children and families affected by substance use disorders and involvement with child welfare services. A 1999 Report to Congress from the National Center on Substance Abuse and Child Welfare, Blending Perspectives and Building Common Ground, established the need for collaborative practice and policies for families with substance use disorders in child welfare. In response to this need, Children and Family Futures developed and refined a collaborative practice model for families involved in the child welfare system. This model draws from the experiences of communities that have implemented practice and policy changes to accomplish the five national goals set forth in Blending Perspectives. The model calls for collaboration between child welfare, substance use disorder treatment, family courts, and community agencies for the benefit of families affected by substance use disorders. We believe that collaboration is not just a useful add-on in child welfare, it is the critical link to resources that the system needs for success.