Four papers in this month's issue present and discuss the main results of the ACCESS program (Access to Community Care and Effective Services and Supports), a five-year demonstration project funded by the Center for Mental Health Services. In the first paper, Frances Randolph, Dr.P.H., and her colleagues present an overview of the ACCESS program, which provided funds and technical assistance to nine community sites from 1994 to 1998 to reduce the fragmentation of services for homeless persons with severe mental illness (see page 945). Two of the four papers report the main findings of the evaluation study. The first, by Joseph P. Morrissey, Ph.D., and his associates, focuses on one of the two core questions: Does implementing strategies to change service systems lead to better integration of the systems? Contrary to expectations, the nine sites that received assistance did not demonstrate significantly greater overall systems integration than nine comparison sites in the same communities. However, at the agency level, the effects of the integration efforts were more evident, and more extensive implementation of systems change strategies was associated with a higher level of integration, at both the systems level and the agency level (see page 949). The second paper reporting the main findings, by Robert A. Rosenheck, M.D., and his colleagues, focuses on the second core question of the evaluation study: Does better integration of service systems improve the treatment outcomes of homeless persons with severe mental illness? Contrary to expectations, the mental health and housing outcomes of clients at the nine experimental sites were not significantly better than those of clients at the comparison sites. Outcomes improved for clients at all sites, but they were not related to the extent of implementation of the systems integration strategies. However, clients of sites that became more integrated had better housing outcomes, regardless of the degree of implementation or whether the sites were experimental or comparison sites (see page 958). In the fourth paper, Howard H. Goldman, M.D., Ph.D., and his coauthors summarize the lessons learned from the ACCESS program (see page 967).