My guess is that it might be at the Juvenile Justice Center, 1000 S. Michigan St., but the clerk would know best. I do know that a couple people I talk to at school have had to go to family court there for paternity and visitation issues.
Like sepe said, the 'JJC' is the place. Most all criminal matters involving juveniles, custody, etc are held there. I spent some time there several years ago winning full time custody of my son. There is usually a morning and afternoon session. The morning sessions begin at 9:30 am. You just wait until your case is called.