Eleven schools changed head coaches in NCAA Division-I men's hockey this offseason, the most of all time according to College Hockey News. "There are a lot of reasons why there are coaching changes," said Bemidji State coach Tom Serratore, the fifth-longest tenured coach in the country. Changing of the guardOther college hockey giants have stepped down in recent years. I think as investment in college hockey brand has grown, salaries have grown and I think the pressure to win and be competitive has grown with that. The seven NCAA programs with the most national championships — Denver, Michigan, UND, Wisconsin, Boston University, Boston College and Minnesota — all changed coaches in the last eight years.