The premise, that cigarette smoking is hazardous to health, is the basis of this study. The purpose of the study was to cause a shift in behavior from the "presmoker" or "smoking experimenter" toward the "nonsmoker" rather than the smoker. The general concept, the cigarette smoking habit is a health hazard of sufficient importance for youth to resist the pressure to smoke, was used to develop a unit in smoking for seventh graders. A pilot study was conducted using a five lesson unit on smoking education. Three different approaches were used: (1) the individual approach, (2) the peer-led approach, and (3) the teacher led approach. Teacher preparation was also tested, a regular classroom teacher as opposed to one having been trained in smoking education. A total of 575 seventh grade students participated. Results indicate (1) the teacher led approach appeared to be most effective in situations where good discussion was possible, peer-led was more effective in smaller size classes; (2) regular classroom teachers were more effective; (3) girls made a more significant change toward non-smoking than boys; and (4) in general, the five lesson experimental education unity changed attitudes and beliefs about smoking. (SK)