On the differences, etc with headstart, private programs, preschool, etc. If someone could tell me what the mission and goals for these different programs are that would be great. I've been my son's only teacher thusfar but I'd like to send him to school in the next year only I don't want him to be just babysat but I don't want a very rigorous program either. I'd like him to be challenged. Does anyone find that daycare for their 3 yr old is challenging enough?