Former CPS CEO Barbara Byrd-Bennett was sentenced to 4 1/2 years in prison Friday for her role in a contract-rigging scandal that rocked the Chicago Public Schools, the Chicago Sun-Times is reporting."I was the CEO, not Gary Solomon, not Tom Vranas," Barbara Byrd-Bennett said of her co-defendants before she was sentenced."I ought to be punished."Just hours before, Vranas was sentenced to 18 months in prison by U.S. District Judge Edmond Chang.Vranas cried after Chang handed down his sentence, which also includes three years of supervised release after his prison term. He must surrender by Sept. 11.