FILE - In this Sept. 9, 2011 file photo, Chicago Mayor Rahm Emanuel, left, and Chicago Public Schools CEO Jean-Claude Brizard greet students as they arrive at Carl Schurz High School in

FILE - In this Sept. 9, 2011 file photo, Chicago Mayor Rahm Emanuel, left, and Chicago Public Schools CEO Jean-Claude Brizard greet students as they arrive at Carl Schurz High School in Chicago. On Thursday, Oct. 11, 2012, Brizard stepped down from the post by mutual agreement after a little more than a year in the post. The move comes about three weeks after CPS and the Chicago Teachers Union resolved the first teachers strike in the city in a quarter century. Emanuel named Brizard to the post 17 months ago. (AP Photo/Paul Beaty, File)