As a candidate, President Obama signaled to teachers unions that he was open to the idea of linking teacher pay to student performance. Now, his administration is moving more aggressively to promote it.
Last week, Education Secretary Arne Duncan challenged the National Education Association, the nation's largest teachers union, to drop its opposition to merit pay. The union's leadership says it's willing to talk, but most of its rank and file want no part of it. As more and more Democrats in Congress line up behind the idea, they may have no choice.