The study examined the impact of high school extracurricular activities on learning in 515 award-winning high school students and student leaders. Fifteen research questions are listed (with data reported in separate charts for each question) on such topics as degree of involvement, participation in athletics, effects of numbers of awards and leadership roles, and benefits of extracurricular activities as perceived by students. Implications for practice of administrators, curriculum planners, and teachers are considered, among them that participation in extracurricular activities provides opportunities for belonging as well as for developing maturity and independence. Future research directions are noted. (CL)