You should expell a student who writes racial slurs.
Mitchell was sent to the principal, Benjamin, for giving a note to John calling him a racial slur.
Benjamin wants to punish Mitchell.
Benjamin explains to Mitchell that there is no place for racism in the school and expels him.
Benjamin tells Mitchell that he'll need to report to Saturday School this weekend.
John is able to focus better at school since he doesn't have to worry about encountering Mitchell.
John feels uncomfortable attending school with Mitchell still in attendance.