I’m for doing all kinds of things to weaken the monopolistic character of the public-school system, Mark, from expanding charter schools to breaking up large municipal school districts to enacting tuition tax credits. But a lot of parents have put a lot of effort into getting their kids into relatively good public schools. They are not interested in talk of turning the system upside down. And they’re right to react skeptically to that kind of talk. One of the reasons that proponents of school choice have not gotten very far is that they have underestimated the parental stake in the existing school system.