As Chancellor of Washington, DC's notorious public schools, Michelle Rhee got national attention for closing 23 poor-performing schools and firing 500 teachers. But the poster-child for President Obama's "Race to the Top" has resigned after the mayor who hired her lost his bid for re-nomination. What will that mean for "Race to the Top" and school reform based on teacher accountability? Is it a win for teachers' unions and the seniority system? Are other factors just as important as teachers when it comes to improving the quality of public education? Our guests today include Davis Guggenheim, director of the school-reform documentary, Waiting for Superman.