She's been called the first lady of American magazines - she spent more than 40 years in the world of publishing. But Cathie Black became the subject of front page news herself in 2011, during her disastrous, and very brief, appointment as New York City's Schools Chancellor.

"I thought that the opportunity to make a difference for the 1.1 million children in New York City public schools was just incredibly energizing, incredibly motivating. And I wanted really to do it. What I didn't realize and I don't think the mayor realized it either, was that I was coming up against…was a very strong union in New York."