The School-based Youth Services Program (SBYSP) provides a one-stop location or center accessible to teens within or close to the public school. It is designed to help at-risk students by coordinating services between the community and the school, with the goal of keeping students in school and helping them gain skills that lead to employment, further education, and a healthy life-style. From its inception, the program has contained a strong assessment and evaluation component, but the database was not fully computerized until 1991-92. This advance has made the SBYSP year-end evaluation and monitoring much easier. How the databases were developed, from the construction of survey instruments through the assessment of student outcomes, is described. Information was obtained from student and customer satisfaction surveys, parent surveys, academic and attendance records, telephone interviews with graduates, four case studies, and focus groups at the project schools. Suggestions are given for improving the usefulness of the data collected and the assessment of program impact. Seven tables and three figures present study findings. Six appendixes contain project synopses and the various survey forms. (Contains 15 references.) (SLD)