That depends on where you're heading ... if you'd like to PM me or someone else some more realistic to/from areas, we can provide some good ballparks for you.

BTW - I was thinking about your wife's need for public transportation the other day and realized that we were all discussing areas where you'd live that would have something but never mentioned that she might have a bigger issue finding a bus/metro stop near a school for the other side of her commute. That requirement will likely limit the schools she would be able to work with.