This research is the most accurate description of college sports' participation patterns to date, shows that both men's and women's sports participation have increased over the past 25 years. It examines factors, including Title IX and athletic expenditure growth, impacting today's college sports participation trends, which vary widely by sport. Changes in high school sports participation, rising health care costs, increased numbers of international students, and college recruitment are explored, as well as the implication of these participation trends on college sports' diversity. NCAA Sports Sponsorship and Participation Rate Report is appended. (Contains 18 tables, 1 figure and 15 footnotes.)