Chicago teachers went on strike Thursday, marching on picket lines after failing to reach a contract deal with the nation's third-largest school district in a dispute that canceled classes for more than 300,000 students.

Chicago teachers went on strike Thursday, marching on picket lines after failing to reach a contract deal with the nation's third-largest school district in a dispute that canceled classes for more than 300,000 students. https://t.co/r9aQPTew1x

— Los Angeles Times (@latimes) October 17, 2019