This volume brings together the reports and discussion connected with a roundtable convened by the Departments of Education and Labor and the National School-to-Work Office to discuss issues surrounding the conduct of a net impact evaluation of school-to-work. After an introduction that summarizes the approach and intentions of the School-to-Work Opportunities Act and describes evaluation activities that have been commissioned separately from a net impact effort, six commissioned papers are presented. The papers are as follows: "Evaluating Early Program Experiences in the School-to-Work Opportunities Act: Policy and Design Issues" (Gary Burtless); "Net Impact of School-to-Work: Exploring Alternatives" (Charles Dayton); "Net Impact Evaluation of School-to-Work: Desirable but Feasible?" (Robert Glover, Christopher T. King); "Evaluation of School-to-Work Transitional Programs" (James J. Heckman); "Evaluating the School-to-Work Opportunities Act of 1994" (Robert A. Moffitt); and "Net Impact Evaluation of School-to-Work: Contending Expectations" (Hillard Pouncy, Robinson Hollister). Following the papers is a summary of the roundtable discussion and an epilogue that synthesizes both the papers and the discussion. Contains a list of participants, 190 references, and some papers includes tables/figures. (MO)