Scores were wrong for only a small fraction of teachers, the school system says, but the president of the Washington Teachers Union says she is "deeply disturbed" by the information.
The National Board for Professional Teaching Standards announced this week that 4,117 teachers received certification from the group in 2013down 17 percent from the previous year and more than 50 percent from 2008.
A list of the most widely read items on the Teacher Beat blog in 2013.
TFA goes on record to support the common-core standards.
A variety of civil rights groups protest the U.S. Department of Education's lack of action on the distribution of effective teachers.
An advocacy group in California aims to get a referendum on the ballot making it easier to fire teachers for malfeasance.
Plaintiffs may bring their challenge to five parts of California's education code relating to teacher employment.
New Mexico's governor has proposed several new pay initiatives.
A new report from the National Council on Teacher Quality finds fault with how teacher colleges approach instruction on classroom management.
The national union has reportedly spent more than $1 million on advertising buys to promote the campaign.