new coach of the Temple University football team, agreed to give a lecture to the boys in the league. In his honor, the league was renamed the Pop Warner Conference. Today, Pop Warner Little Scholars—as the program is now known—enrolls over 300,000 young boys and girls ages 5–16 in over 5000 football and cheerleading squads, and has affiliate programs in Mexico and Japan. Other organizations, such as the Police Athletic League, Upward, and the National Football League's NFL Youth Football Program also manage various youth football leagues. Football is a popular sport for high schools in the United States. The National Federation of State High School Associations (NFHS) was founded in 1920 as an umbrella organization for state-level organizations that manage high school sports, including high school football. The NFHS publishes the rules followed by most local high school football associations. More than 13,000 high schools participate in football, and in some places high school teams play in stadiums that rival college-level facilities. For example, the school district serving the Houston suburb of Katy, Texas opened a 12,000-seat stadium in 2017 that cost over $70 million to host the district's eight high school teams. The growth of high school football and its impact on small town communities has been documented by landmark non-fiction works such as the 1990 book Friday Night Lights and the subsequent fictionalized film and television series. American football outside the United States American football has been played outside the US since the 1920s and accelerated in popularity after World War II, especially in countries with large numbers of U.S. military personnel, who often formed a substantial proportion of the players and spectators. In 1998, the International Federation of American Football, was formed to coordinate international amateur competition. At present, 45 associations from the Americas, Europe, Asia and Oceania are organized within the IFAF, which claims to represent 23 million amateur athletes. The IFAF, which is based in La Courneuve, France, organizes the quadrennial World Championship of American Football. A long-term goal of the IFAF is for American football to be accepted by the International Olympic Committee as an Olympic sport. The only time that the sport was played was at the 1932 Summer Olympics in Los Angeles, but as a demonstration sport. Among the various problems the IFAF has to solve in order to be accepted by the IOC are building a competitive women's division, expanding