Disrepair — such as this floor in the gym of Noble Elementary-Middle School in Detroit — and other problems have prompted the teachers' "sickout" protests.
Courtesy of Detroit Federation of Teachers
Oliver Elementary School in Birgmingham, Ala., where Ann Marie Corgill taught until Friday. The recent Alabama Teacher of the Year says she quit her job after being told she wasn't highly qualified to teach fifth grade.
Teachers walk the picket line outside Garfield High School in Seattle, Wash., last week. They're going back to work on the strength of a tentative contract agreement.
Matt Mills McKnight/Reuters /Landov