It's more that the people who own houses in a city get votes as to whether the price of their investment should go up but the people who would like to move there don't get a vote.

But really in the Boston area it seems like a bigger force (talking with some co-workers) is not wanting poor people to move into their school districts for various reasons. If it were just prices there'd be a contingent who would want to be able to sell their plots to developers for even more than they could resell it for as is.