If the school reformers truly believe that teachers are the key to the success of children --- and I agree, they certainly are one of the keys --- then the reformers must reconsider the mindless application of the deadly algorithm.
Right now, too many schools and colleges of education resemble diploma mills that actually benefit from the churn in the profession. That's a disgrace.
The thought that people with "higher" degrees can aimlessly teach the most at risk children without proper preparation and training is false and cruel.
Despite what Duncan thinks, nothing short of experience is going to prepare middle-class aspiring teachers to work with students who have high social and academic needs.