Benson lists off a few of her accomplishments since running Manhattan SVU to Tucker, which include busting up Johnny D.'s Sex Trafficking Ring in the episode Undercover Mother (2015) and the capture and imprisonment of Greg Yates in the episode Daydream Believer (2015)
Ed Tucker gives Benson a heads up that the higher ups want a Lieutenant running Special Victims Unit, so she has been asked to take the Lieutenant's exam.