Many advocates are seizing on the NAEP claims as evidence that their teacher-effectiveness strategies are working. Are they? Maybe, but it's hard to prove empirically.
Effective elementary teachers who transferred to low-achieving schools boosted students' scores, according to a randomized experiment. But many eligible teachers did not want to move despite financial rewards.
Unions oppose details of a House bill requiring background checks for teachers.
The Washington-based National Council on Teacher Quality released its annual report rounding up states' teacher-evaluation policies, which have become increasingly stringent over the last few years.
Teachers are posting higher scores on the SAT exam than two decades previously, and higher scorers are now just as likely to teach as their peers.
Seven states will use CCSSO funding and technical assistance to overhaul systems for preparing and licensing teachers.
Unions are turning on the heat on New York Education Commissioner John King, saying he must slow the consequences attached to new common-core-aligned exams.
The city's closely-watched system for evaluating teachers and providing bonus pay appears to have motivated weak teachers to make improvements, and to spur already-effective teachers to even higher levels of performance, a study finds.
California Gov. Jerry Brown has vetoed a proposal amending the state's teacher-dismissal processes.
Highlights from Education Week's look at the burgeoning world of online teacher preparation.