From 2012 to 2019, 33 Chicago aldermen were convicted on corruption charges, a conviction rate of roughly one third of those elected in the time period. A report from the Office of the Legislative Inspector General noted that over half of Chicago's elected alderman took illegal campaign contributions in 2013. In 2015, mayor appointed Barbara Byrd-Bennett, the CEO of Chicago Public Schools, was convicted in a $23 million kickback scheme and was sentenced to seven and-a-half years in prison. In addition to the Bennett conviction, a joint investigative report issued by the Office of the Inspector General and federal authorities documented widespread corruption within Chicago Public Schools in 2015. The audit noted the criminal shakedown of a CPS vendor, a records falsification scheme by a principal, numerous instances of employees abusing CPS's tax-exempt status to purchase personal items at big-box retailers, illegally using taxpayer-funded resources to campaign for political causes and stealing from taxpayer-funded accounts intended for purchasing student materials.