Complex sentence: Bacon coached the hockey team of his alma mater, Ann Arbor Huron High School, from 2000 to 2004, leading them from the worst to best record in school history in three years.
Split into simpler sentences: Bacon coached the hockey team of his alma mater, Ann Arbor Huron High School, from 2000 to 2004. He led the team from its worst to its best record in school history in three years.