Episode 12 of "Boston public"
s01e12 Chapter Twelve

As Senate approaches the school grounds, he saves a student from being attacked by gang members. After numerous attempts, Harry finally manages to get the boy to reveal that he is a member of the Crips and is attempting to leave the group because he killed a rival gang member. However, Senate is unable to help because he gave his word that he wouldn't discuss the situation with the authorities. Prevented from taking action, he reluctantly hides the truth from Lauren, his co-workers and the police. Meanwhile, Harper grows even more suspicious about Lisa and Buttle's deepening friendship, so Guber takes the reins and alerts Lisa's parents about their daughter's rumored affair. Thoroughly panicked, Milton tries to break it off, but Lisa pushes him to have sex one last time and her father catches them in the act. Buttle is immediately fired and the news rocks the halls of Winslow High. But when Riley attempts to soften the blow for Milton, Guber fires him as well for withholding information. In the midst of these crises, Lauren has her hands full trying to help an overweight female wrestler, Christine, cope with the loss of her boyfriend. Known as "The Blob" to the student body, Christine is attracting fans with her wrestling prowess. Unfortunately, Christine's boyfriend is unable to deal with the pressure of dating such a well-known object of ridicule and breaks up with her. Christine eventually comes to terms with her size and wins yet another wrestling match. She then bravely stands up for herself by asking her fans to call her Christine instead of "The Blob."