This paper describes a study which examined the similarities and differences in the reactions to a naturalistic account between an internal participant audience and an audience external to the evaluation context so that some notions about generalizability of such material could be developed. A second aim of the study was to examine the effectiveness of a naturalistic account in promoting educators to reflect upon their own practice. The research in this investigation involved: (1) a six month case of cooperative education in an urban secondary school, and (2) the collection and interpretation of data about audience reaction to an account which was based upon information gathered during the case study. The results indicate that the account stimulated quite different responses in the two audiences. The internal group did examine current practice and frequently worked out potential alternate strategies for overcoming their problem areas in the future. Conversely, the account seems to have stimulated the external audience to look back upon their past experiences and the manner in which they had solved their problem. The paper also discusses some pedagogical implications which the results of this study may have for evaluators. (Author)