Timeline: CPS, CTU Conflicts

Chicago public school teachers take a group picture as they walk a picket line outside a school in Chicago.
Chicago public school teachers take a group picture as they walk a picket line outside a school in Chicago. M. Spencer Green / AP Photo
Chicago public school teachers take a group picture as they walk a picket line outside a school in Chicago.
Chicago public school teachers take a group picture as they walk a picket line outside a school in Chicago. M. Spencer Green / AP Photo

Timeline: CPS, CTU Conflicts