A study examined the objectives of supported employment programs for individuals with severe disabilities and identified performance measures to document the practices and achievements of such programs at the federal, state, and local levels. A set of proposed data items and potential performance measures was developed on the basis of programs objectives, performance questions, and feasibility issues that were identified from a literature review, telephone discussions with a broad range of policymakers and practitioners, consultation with an advisory committee, and meetings of the 10 first-round demonstration states. A national seminar and a California state forum were convened to address the desirability and feasibility of attempting to implement consistent data collection across projects and states, share ideas for dissemination of project findings, and prioritize research questions and areas of future study. Performance measures were developed to assess employment outcomes, quality of employment, opportunities for worksite integration, ongoing support, quality of life, participant characteristics, systems change, and supported employment costs. (Appendices to this report include lists of study respondents and seminar participants, a 21-page bibliography, and the current Office of Special Education and Rehabilitation Services definition of supported employment.) (MN)