A longitudinal evaluation study of a science professional development program for K-12 teachers was conducted using the CIPP evaluation model. Eleven years of program data were described and analyzed. Elementary teachers comprised 62% of the 384 participants, 17% of all participants were middle school teachers, and 13% of all participants were…

Initial findings of a 5-year project examining the effectiveness of a sexual abstinence education program in grades 5-8 are reported. Following implementation of the "Sex Can Wait (SCW)" program, differences between the "SCW" group and a comparison group favored "SCW" on knowledge, positive attitudes towards…

Stressing changes in program status, this study examined all American universities offering executive development programs (EDP). Criteria were six program features and six institutional characteristics. Information came from conference brochures and standard statistical sources, interviews with program directors and researchers, and…

Quasi-longitudinal data on student achievement, drawn from a computerized file on about 50,000 children, essentially consist of cross-sectional performance data analyzed in terms of length of program exposure while allowing for analysis of post-program performance on the basis of program exposure. The data are also analyzed according to the major…

This report is the fourth in a series of follow-up analyses of nine longitudinal studies addressing the costs and effectiveness of alternative types of early intervention for children with disabilities. An introduction provides an historical perspective and conceptual framework for the studies, including common study elements and how research…