The various arts and sciences that comprise the field of program evaluation are discussed. It is argued that emphasis on rigor and expressive content has left other aspects of evaluation unexplored. Educational evaluators need to consider what programs mean and how they contribute to understanding. (SLD)

The formative/summative evaluation dichotomy suggested by M. Scriven is challenged, and a conceptual typology is presented that crosses improvement and assessment evaluation functions with process and outcome program stages for four basic types of evaluation. This framework accommodates mixed types of evaluations. (SLD)

Data about outpatient treatment unit follow-up evaluations drawn from selected evaluation items in the recent National Drug Abuse Treatment Survey are reported. Directors and supervisors of 670 units completed surveys describing the follow-up studies. The majority of programs collecting follow-up data used the information for program change. (SLD)

This article describes an ongoing survey that illustrates how evaluators, working with program managers, have effectively used client-based data to monitor performance in the Social Security Administration. The value of client-based data outweighs the limitations and problems collecting it. Customer perceptions are a critical barometer of quality.…

Effective practice reviews (EPRs) are described as used in evaluation studies for the Office of Evaluation and Inspections, a component of the U.S. Department of Health and Human Services. Examples are given of EPRs in addressing new problems, structuring and improving federal programs, and decreasing costs. (SLD)