We live in Silver Spring, and between our two kids, we pay ~$2,000/month for private middle school and preschool. Our older one has one more year at his middle school (started there when we lived in an area with pretty crappy public schools), and the younger one finishes preschool this summer. We moved and now pay ~$1,000/month more for a roughly equal house, but better public schools and a better neighborhood. A shorter commute (40 minutes on a good day, but usually 50-60) is a minor side benefit.

I'm really looking forward to the end of paying for school because we can finally get a much-needed new car. Once they're both done, it'll be the equivalent of getting a pretty decent raise.