The NC State Wolfpack is the nickname of the athletic teams representing North Carolina State University. The Wolfpack competes at the National Collegiate Athletic Association (NCAA) Division I as a member of the Atlantic Coast Conference (ACC) for all sports since the 1953–54 season. The athletic teams of the Wolfpack compete in 22 intercollegiate varsity sports. NC State is a founding member of the ACC and has won twelve national championships: six NCAA championships, two AIAW championships, and four titles under other sanctioning bodies. Most NC State fans and athletes recognize the rivalry with the North Carolina Tar Heels as their biggest.