I wrote a work of history, I looked at over 500 sources - I spent three-and-a-half years on the project. I think the most gratifying and wonderful thing about the reaction is that people are learning things from the history that feel relevant to today.

This is something that Randi Weingarten said to me when I interviewed her once, which I think I quote in chapter nine. She talks about how only 7 percent of private sector workers in the American economy are in unions. So all the protections that teachers have that are due to collective bargaining - including generous pensions, generous health plans, limits to what they can be asked to do after school and in the summers - all of those things are sources of resentment to the public. And I think that politicians have played off of that quite effectively.

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.

Younger teachers are definitely more likely to have worked at charter schools as opposed to have just heard of them. Charter schools explicitly look, often, to hire younger people.

I think any sort of system that gives teachers more opportunities like teacher-led schools is a positive one that's going to lead to better retention in the profession, and it's going to be more intellectually challenging, so teachers stay engaged with their work over the many years of their career.

What happens from about 1954 to the late 1980s, is that we see a huge wave of optimism that school desegregation is going to be the way to improve educational outcomes for poor children of color. And we see a consensus build on the left and in the center that this is going to be a transformative education movement like none other we've seen in American history.

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.