Updated

Chicago Public Schools CEO Jean-Claude Brizard has stepped down 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.

Mayor Rahm Emanuel named Brizard to the post 17 months ago. He is being replaced by Barbara Byrd-Bennett, who has been filling in as Chicago's interim chief education officer.

Emanuel said Thursday the decision for a change was made during "two to three separate conversations" in recent days.

Talk of Brizard's departure has been circulated for several weeks. On Sept. 19, shortly after the strike ended, Emanuel said: "J.C. has my confidence."

Brizard has not commented on his departure.