This was the last season prior to the creation of Division I-AA, which the Big Sky joined. Through 1977, the Big Sky was a Division II conference for football, except for Division I member Idaho, which moved down to I-AA in 1978. Idaho had maintained its upper division status in the NCAA by playing Division I non-conference opponents (and was ineligible for the Division II postseason). (Idaho was involuntarily dropped to the College Division then returned to the University Division
