A lot of charter schools are non-union schools that take a lot of teachers from alternative tracks, like Teach For America. They do this in part because a lot of charter schools have very strong ideologies around how they want teachers to teach. And they find that starting with a younger or more inexperienced teacher allows them to more effectively inculcate those ideas.

Just to deliver one high-quality 45 minute lesson requires many hours of planning in advance.

There are a lot of polls that show that actually Americans have a pretty high opinion of teachers, that Americans think teachers are just about as prestigious as doctors. And yet there's this political conversation - this reform conversation - that paints a very negative picture of the effectiveness of the teaching population. So there's definitely a tension between the way teaching is talked about and understood at the political level and how everyday average Americans think about teachers.

Coming to the civil rights movement in the twentieth century, we begin to have this idea that's still with us today, which is that the main purpose of public education is closing achievement gaps.

The question is rarely asked, "Why is it that so few other Americans have these protections?" The question is more often asked, "Why do teachers have it so easy?"

I don't think school reform should be motivated by missionary zeal. I think it should be motivated by evidence of what works. I have been critical of Teach For America in the past but I think one of the things about their model that's interesting is that they're constantly looking at it and whether what they're doing works and reassessing their model, and making changes. So to the extent that I believe everyone in the education sector should be looking at evidence, reassessing, making tweaks to figure out what works, I think it's a positive model.

If you're afraid to talk to the other adults in your school it is definitely throughout history the hallmark of a failing school. When I was writing about the teachers' strike in New York City in 1968, the middle school where events triggered that strike was a place where teachers were known to hide in their classrooms.