This new report from the Center on Teaching Quality is pretty signal and is well worth reading. Substantively it discusses various kinds of pay differentiations (skills, performance, etc…) in a matrix much like what is being tried in, for instance, Denver. But more than that it is politically significant because another one of the old-line groups is now on board with modernizing teacher compensation and incorporating performance into the mix. Plenty of room to argue the details, sure, but that notion was heretical just a few years ago. Now it’s pretty pedestrian. That’s for the good for students and teachers.