 After World War II , enrollment quickly grew to more than 3 @,@ 000 . A large amount of housing had to be built on campus as well as several new academic buildings . The 1950s saw the rise of the Fighting Sioux hockey tradition . In the 1960s and 1970s , many student protests occurred at UND . The largest occurred in May 1970 when over 1 @,@ 500 students gathered to protest the Kent State shootings . In 1975 , enrollment swelled to a record 8 @,@ 500 . The 1970s also saw the establishment of the John D. Odegard School of Aerospace Sciences at UND . During the 1980s and 1990s the University continued to grow . However , the devastating 1997 Red River Flood inundated numerous buildings on campus and forced the cancellation of the remainder of the school year . 
