The Michigan High School Athletic Association on Monday announced the "classes" that its 760 member schools will compete in during the 2012-'13 school year.
They used enrollment figures to determine whether a school is Class A, B, C, or D.
This is only used for boys and girls basketball and girls volleyball. Other sports use a "division" system. Here in the Upper Peninsula, Sault Ste. Marie moves from Class B to Class A, while Rudyard and St. Ignace move from Class C to Class D. See the entire list HERE .