The Secondary Transition Intervention Effectiveness Institute conducts applied research, program evaluations, and evaluation technical assistance in the areas of secondary special education and transitional services for individuals with disabilities. This annual report describes activities carried out during the fourth year of the Institute's operations, focusing on a literature review, annual meeting for model demonstration project directors, communication among project directors, research, evaluation technical assistance, evaluation research, experience for graduate students, and the performance measurement system that is used to monitor all Institute activities. Specific research studies described include: social ecology of the workplace, co-worker involvement, parents of young persons with special needs in transition, assessing and facilitating employers' attitudes toward hiring employees with disabilities, and transition policy analysis. Reports are also presented on four evaluation research programs: model program database and competition analysis, meta-analysis of employment outcomes, analysis of extant data sets, and research on evaluation approaches. (JDD)