school district. >> featured in the lightning rod documentary "waiting for superman" rhee turned the school system upsidedown, firing dozens of schoolteachers and closing 27 schools. you famously clashed with the unions while you were in office. do you think still in retrospect and looking forward, are teachers unions are a fundamental problem to educational reform? >> well, i think that teachers unions, but more specifically the contracts, the collective bargaining agreements that dictate a lot of the policies in school districts are extraordinarily problematic. >> one of the policies rhee has been fighting has to do with seniority. when schools cut their budgets, newer teachers are often laid off before the more experienced teachers regardless of their performance. it's the so-called last-in, first-out policy. >> this is a policy that makes absolutely no sense for children.