Project Self Discovery, an experimental program, sought to promote the social and personal development of bright underachieving students in nine Florida high schools. Prepared and evaluated were 12 discrete but interrelated chapters (units) offering readings and written exercises. These independent study units were concerned with such topics as interpersonal relations, self-confidence, individual differences, feelings, and self-discipline. The effectiveness of this program was measured by pre- and post-testing using the California Psychological Inventory, and comparisons with a control group were made. Statistical analysis showed that there was "modest" evidence that the program had a positive and favorable effect on the experimental group. Counselors in the participating high schools were enthusiastic about Project Self Discovery and felt it was well-suited for group guidance activities. (NH)