This paper systematically reviews research on the effectiveness of collaborative school-linked programs. It first briefly discusses the history and current stage of practice of such programs, and then summarizes the design and findings of 55 school-linked programs with collaborative elements. Advocates of collaborative programs believe that making agency services available in one location will increase the efficiency and effectiveness of service delivery. Many different types of collaborative school-linked programs have been implemented to target at-risk students. A literature review was used to select the programs considered in this analysis, and these programs were then divided into the following categories: (1) parent education, school readiness and life skills; (2) teen pregnancy prevention and parenting; (3) dropout prevention; (4) alcohol and drug use and abuse prevention; (5) integrated services; and (6) parent involvement. For each area, an overview of programs, the type of research design and evidence collected, and results are highlighted. Overall, outcomes of these programs are positive, with integrated services the area with the highest percentage of positive outcomes. A bibliography lists 44 sources by program area. (Contains 10 tables and 34 references.) (SLD)