Six tests were given to the entire sophomore class (120 males, 104 females) at a suburban school north of Boston before and after particiaption in the Project Adventure physical education program, some goals of which were the development of students' self confidence, improved self-concepts, ability to take physical, emotional, and social risks, decreased passivity, and improved physical functioning, by using many Outward Bound techniques and concepts. The tests included the Tennessee Self-Concept Scale, School Climate Survey, Student Description Form, a questionnaire, an aerobic physical fitness test, and the Rotter Scale of Internal vs. External Control of Reinforcement. Limitations of the study were the lack of a control group, non-testing of absentees, and having a project staff member as evaluator. Results in the school climate category indicated no significant changes in the boys as a group, while the girls saw an increase in teacher warmth and in organizational clarity. Participants perceived a significant decrease in general enthusiasm in the school. In the category of physical self, significant improvement resulted. An overall increase in general self-concept took place, especially in the girls. One of the most significant results was the difference in responses of the boys and the girls, who did much better than expected, to the project. (AN)