Some of the problems unique to evaluation research, in particular to the evaluation of longitudinal studies of social programs, are presented. A working model found to be useful in structuring compensatory education program evaluation activities is also offered. Since the goals of social programs such as Head Start are dynamic rather than static,…

Threats to the validity of the Title I Evaluation and Reporting System are covered in two parts: an annotated bibliography of reports concerned with technical issues, and a discussion of threats to validity--from the reporting system in general and from each model in particular. Threats common to all three evaluation models are reported:…

The three RMC models endorsed by the U.S. Office of Education for the evaluation of Elementary and Secondary Education Act Title I programs are based on narrowly conceived approaches to evaluation--the measurement of cognitive achievement gains. Each model requires the comparison of observed student performance with an estimate of what level of…

The orientation of this report is that of identifying educational projects which can be considered clearly exemplary. The largest section consists of a 22-step procedure for validating the effectiveness of educational projects using existing evaluation data. It is not intended as a guide for conducting evaluations but rather for interpreting data…