An extensive review of literature on trends in the consumption of tobacco; concern regarding tobacco and health; the relationships between smoking and lung cancer, chronic bronchitis, emphysema, and coronary heart disease; effect of smoking on human tissues; chemistry of tobacco smoke; and the smoking habits of students precedes discussion of an investigation conducted to determine smoking habits and attitudes of high school seniors. The questionnaire developed for the study is described, and detailed findings on smoking habits; first smoking experience; relationships of smoking to parental smoking habits and attitudes, academic achievement, participation in athletics, participation in extracurricular activities, and instruction about smoking and health; reasons for smoking or not smoking; and student attitudes and opinions are presented. The implications of the study and recommendations for action are outlined. See TM 000 768 for the questionnaire employed in the study. (DG)