Every year, more than a million kids drop out of school. Without a diploma, they will have a tough time succeeding.But the problem starts much earlier than high school. This hour, we'll ask the big questions: Why are students dropping out? What's the cost? And, what works to keep them in school and graduate?We’ll talk to Arne Duncan, the education secretary in charge of turning around the problem. And we'll look at the dropout crisis through the eyes of the kids themselves.That's Thursday at 1pm.