The Stanford rugby teams of 1906 to 1917 represented Stanford University as the school's only football program during those years, replacing American football with rugby union. The school had played American football from 1892 to 1905, but in 1906, concerned with the growing levels of violence in football, Stanford and other universities changed to rugby. Stanford played twelve seasons of rugby, during which it played other college teams, club teams from the United States, Canada, and Australia, as well as the New Zealand national team and Australia national team. Despite the team's success, it became clear that other schools were not adopting rugby in large numbers, and after rival California returned to football in 1915, Stanford faced a limited number of potential opponents; and after a