The effectiveness of an extra curricular leadership training program for highschool students was assessed. This quantitative program evaluation was both formative and summative in design. Accessibility sampling procedures were utilized it) this post-hoc study. Results suggested that the weekend training marathon format using the experiential approach was a most effective method of teaching leadership skills and improving self-esteem in highschool students. The program not only had a positive impact on the student participants, but was also a benefit for the school as a whole.