There's a lot of buzz in the policy community right now around scaling up high-performing charter schools and turning around low-performing public schools. That's mostly because Arne Duncan has been talking up these issues and indicating that he wants to put big bucks behind both efforts. I'm more enthusiastic about the former than the latter, but there's reason to be skeptical about both. That's because I don't hear a lot of straight talk (except on Flypaper, of course). Let me try to offer some...Read it here.