The IHSA has released tentative class breakdowns for the 2010-11 school year and there's one big change in boys basketball: defending Public League champ Morgan Park is set to move down from 4A to 3A.
Wayne Blackshear's Mustangs are one of four city schools scheduled to move down; the others are Juarez, Julian and South Shore.
Eight schools are slated to go up from 3A to 4A, including Crete-Monee, Richards, Oswego, Westinghouse, DeKalb and Prairie Ridge.
There's also movement in the smaller classes. The most noteworthy is probably defending 1A baseball champ Westminster Christian going up to 2A. St. Benedict is among the schools moving down from 2A to 1A.