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A woman holds up a sign during a rally of striking Chicago school teachers Saturday, Sept. 15, 2012, in Chicago. Union president Karen Lewis reminded the crowd that although there is a "framework" for an end to their strike, they still are on strike.(AP Photo/Charles Rex Arbogast)

Chicago teachers end strike

Chicago teachers

voted on Sept. 18 to suspend a seven-day strike in the nation's third-largest city, a

move that will send thousands of students back to classrooms.