What also needs to be made clear, if you have a background in college basketball (it is not clear by your original question), it is to your benefit to decide which side of the game you want to work on. All of the camps I gave with college evaluations were all Men's camps. So if you have no desire to work Men's basketball, those are not the camps you want to attend. If you want to work women's basketball, attend the Midwest camp that was listed. If you are brand spanking new to officiating, then attend a HS camp.
Here are all the current clinics across the state. You might want to check back to this site because the information gets updated from time to time.
IHSA Camps
Peace