hey there. Probably needs to highlight some sort of conflict eg he is torn between making a choice or some issue/back story with the judge maybe? But then again that all sounds dramatic and the genre says romance/comedy - who is the romantic interest? Should this be alluded to in the longline? "given a second chance by a judge who also happens to be his love interests over-bearing grandmother?"

What's the teen's goal in the story, Kevin Johnson?

Maurice Vaughan His goal is to be the first one in his family to graduate from college without any help from his family and friends.

Claude Gagne KJ is a young man who has been acting out due to not being raised in a stable home. Instead of sending him to jail the Judge is helping him out by sending him to college as an undercover student. After helping out the judge, KJ is free to go but wants to stay in school to get his degree on his own.

Kevin Johnson, that sounds like his life goal instead of his story goal.

If KJ is the main character, I think his story goal would be something that deals with being an undercover student ("Instead of sending him to jail the Judge is helping him out by sending him to college as an undercover student").