What is the role of program evaluation research in making and implementing social policy and how do program evaluators view the social programs they evaluate? This article discusses the findings of two closely related studies that examine these questions from the perspective of organization theory. These studies found that program evaluations rely on methods of research that do not correspond to the extent of uncertainty in social programs over goals and causal knowledge, and that most evaluations define organizational effectiveness solely in terms of goal achievement. In addition, of the various groups with a stake in the evaluation process, only federal and top program administrators influenced the implementation and interpretation of the studies. These findings, when taken together, suggest that program evaluation research acts more to augment administrative control than to increase our understanding of the effects of social policy.