Arne Duncan: America’s teacher training programs are too weak

Arne Duncan may no longer be U.S. education secretary, but he is still focusing on schools and teachers.

Duncan says America needs to improve how it educates teachers.

"The system we have for training teachers lacks rigor, is out of step with the times, and is given to extreme grade inflation that leaves teachers unprepared and their future students at risk. According to a 2014 report from the National Council on Teacher Quality, many of our biggest teacher training programs are twice as likely to graduate students with honors than other programs in the same academic settings," says Duncan.