You could send a child to a private school in the suburbs, but that's doesn't gain you anything over sending the kid to a private school closer to home. Plus, it costs an additional $6000+/year. That's tuition at my local Catholic high school; it's an average school, no better than the publics in the same area.
State budgets are abstract, and it's easy for school boards to ask for more money over time.
3+ BR apartments are fairly table stakes in central and Eastern Europe. It's still a culture shock to me to be unable to find one here in the US, and I've lived here since I was six!
They are frequently aimed at retirees downsizing from even larger free-standing homes. Or, wealthy buyers looking for an urban crash-pad, in addition to their mansion outside the city center.
edit - a quick search of Washington DC shows 14 units available with 3+ bedrooms and <$700,000. Of those, about half are in really rough neighborhoods, where no professional likely to move.