K.G.
G.,
I would ask about this when you call to set up the tour. When we visited preschools (and kindergartens this past year, for that matter), no one brought a child to visits unless the visit specified that it was for the kids. I completely get the babysitting issue, but unless you have family or friends who can help, you might be stuck on that. Also, I know this was not in your question, but to address a prior post, kids that age are too young to make meaningful decisions about where they want to go to school. My son liked one K-8 the best because he liked the play structure. Your intuition will guide you in the right direction. I think the issue from the preschools' perspective would be that it could be difficult to conduct a tour and really communicate with the parents if everyone's kid came. I don't know how hard it is to get into the preschools you are touring, but I would suggest that you ask the schools ahead of time if it is ok to bring your son. That way, they know you are having a hard time arranging babysitting but that you will respect the school environment, etc., if your son is admitted. As for not having received any negative feedback so far, keep in mind that the preschool director would have had to be pretty rude to give you any negative feedback, and that he/she would have made a bad impression on the rest of the group. The directors might have been absolutely fine with your son being there, but there is really no way to know based on their reactions. They are professionals who are, at that moment, busy marketing their schools. If you ask for permission/advice at least you'll know if it's ok to bring your son, and while I can imagine a preschool director being a bit irritated at having to compete with a child running off (as probably any child would), I cannot imagine anyone being put off by your asking for advice.
K.