Penn State has won 85 national team championships all time, 51 of which are NCAA championships. These Division I NCAA championships rank fifth all time, trailing only UCLA, Stanford, USC, and Oklahoma State. Penn State has the most national championships of any Big Ten school. Most of the women's championships prior to 1982 occurred under the auspices of the Association for Intercollegiate Athletics for Women (AIAW); indeed, four women's teams won national championships in 1980 alone. The NCAA did not start sponsoring women's championships until the 1981–82 academic year. Some of the men's championships occurred prior to the NCAA sponsoring a championship in that sport (for example, the NCAA did not start sponsoring a men's soccer championship until 1959) and some sports have never had recognized NCAA championships (such as Division I FBS football).