Chelimsky, former head of the Program Evaluation and Methodology Division of the General Accounting Office, suggested that advocacy by evaluators destroys their credibility. Evaluators should, this author argues, be advocates for democracy and the public interest, with the question being how explicitly and how defensibly. (SLD)

In the evaluation scenario presented, that of a mentoring program matching high school juniors and seventh graders, the external evaluator is asked for impact information before enough time has elapsed to provide really meaningful data. The commentators, T. A. Schwandt and D. G. Bonnet, take different approaches to what the evaluator should do.…