This paper describes an attempt to use a model of behavioral intention as a diagnostic tool to provide useful data for the preparation of health education programs for adolescents in the area of cigarette smoking. The theory of this model is that a person's behavior is a function of their behavioral intention which, in turn, is a function of their attitude towards a behavior and their perception of subjective or social norms concerning that behavior. Participants in testing this model were high school students in the upper three grades. Questionnaires were designed to indicate students' attitudes on smoking, reasons for smoking or not smoking, and the extent of the influence of significant others on their decisions. It is stated that use of this model provides a qualitative as well as a quantitative understanding of cigarette smoking by high school students. Included in this document are samples of questionnaires submitted to participants and tabular analysis of results. (JD)