Hell, in SF that first bit doesn't even help, due to the broken lottery system here. It's probably the main reason why there are so few children (by percent) in SF when compared to other cities. Parents make the logical decision to move out of SF when their kids become school-age because they have near-zero control over the school their kids end up at. Alternatively, they put their kids in private school, which is out of reach cost-wise for many families.