For some, sports foster the social development of young people, teaching kids how to interact with their peers outside the classroom. Sports teach kids what it means to compete--how to cope with losing, how to respond gracefully to success. Sports ale about teamwork, how to work together toward a common goal. Sometimes they're about developing a sense of self-esteem. Sometimes they're simply about finding a healthy way to tire hyperactive kids out so they'll sit still in class or get to bed at a reasonable hour.