I have not attended the Chicago show, but know there are definitely classes, and you will love it! (I go to the IQF Houston show every year.) Anyway, go to their web site
http://www.quilts.com, click on "Shows" then in the left margin all shows are listed. Then just click on the right "Order Class Catalog" and follow the directions. You should get a catalog around three months before the show, and can then sign up for classes, lectures, luncheons, ect. Have FUN! Dawn