H.B.
I don't know either way, because my daughter just turned 4. But I noticed that you are in Crystal Lake and wanted to post because I know that Crystal Lake Central High school has a preschool program-I believe it starts in January and goes through May-2 days a week for about an hour. I believe South High school offers it as well, but you'd have to look into it...I think you have to be in the area that would go to that school to be able to do it, but I think it was only $80 for the whole 4 or 5 months (may have been a snack fee too), but way better than preschool prices. My daughter did it last year and loved it!!
Just another option-if you wanted to send him to preschool and it is only the cost that's holding you back.