During each Academic Year, ISF High School students can participate in the ASIL (American Schools Italian League) Athletic Program, a varsity sports program designed for students in grades 9-12. ISF offers both girls and boys Varsity Soccer, Tennis, Volleyball and Basketball. The league is organized by the Department of Defense of The United States. All of the schools from the American military bases in Europe, in addition to several International Schools, participate in this Varsity League. At the end of the season, there is the possibility to participate in the European championship which is held annually in Germany.