The Chicago Police Department’s promotions system allows officers’ disciplinary records to be ignored. Disciplinary records are not factored in as the department evals fitness for promotion. The main qualifying factor are test scores

Chicago’s system of promotions remains out of step with other big cities. Police departments in New York City and Los Angeles consider disciplinary records before promoting officers, seeing their past actions as a critical factor in determining if they’re fit to supervise others.

In New Orleans, the police department created a promotions policy that considers an officer’s disciplinary history after it fell under a federal consent decree stemming from decades of corruption and misconduct. The department took nearly four years to create and launch its new policy.

https://www.propublica.org/article/chicago-police-department-sexual-misconduct-promotions