J.W.
I was going to say park district too. We have had great luck with our local park and for under $150 a quarter you can't beat the price. I have a 3 and 4 year old and they both love the activities and friends. Also, if you are looking at CPS preschool for next year, you need to start looking next month. Many of the schools have open houses in Sept. and Oct. and then you have to apply by December for the following year. I learned this a little too late the first time around...