New York schools chancellor Joel Klein often speaks eloquently about the harm that the education system’s inability to dismiss incompetent teachers does to children. He’s right about that, of course.

Bob Moses became famous as one of the chief organizers of the Freedom Summer of 1964, when hundreds of college students invaded Mississippi to fight nonviolently for civil rights. But Moses was also a ...

I want to begin a discussion of algebra by saying that too few children have any real understanding of the civil rights movement. Bear with me. When kids know anything at all, it is usually a kind of ...