This article begins by describing the impact of systems science on the field of marriage and family therapy, discussing that systems concepts are broadly disseminated but have become diluted. The author describes the educational program at a marriage and family therapy graduate institute where students utilize social systems design in their research projects as well as their work with clients. The article outlines the specifications of the Idealized Systems Design (ISD) teaching system, its relationship with the larger institution, as well (...) as its purposes and systemic functions. Application of ISD to the field of marriage and family therapy is emphasized, demonstrating its use in helping facilitate individual, family, and community health as a research tool as well as a set of intervention tools for the practicing therapist. (shrink)