Also sworn in were 41 sergeants and five commanders who have new jobs.
Mayor Rahm Emanuel and police superintendent Garry McCarthy were hand for the ceremony.
"Today is a great day for our graduating class," McCarthy said. "You're always going to remember today. It's an amazing accomplishment for everybody here, whether it be a graduate, promotees or me. The fact is, I'm so proud of all of you."
McCarthy thanked them for choosing what he says is not a job or profession, but a calling.
