Arthur Finnerman’s expulsion from Bradley begins with a classroom insult and ends with a break in his friendship with TifAni FaNelli. In TifAni’s recollection, Arthur steps between her and a teacher who is humiliating her, then is removed from class; the next day, The Shark tells TifAni that he has been expelled. The school’s decision is a turning point in their relationship as well as a glimpse of the anger and past discipline that later acquire a darker meaning.

The Classroom Confrontation

Arthur and TifAni regularly pass notes, including in class. During an English lesson, he adds a disparaging example to a note they have been sharing, and TifAni’s laughter draws the class’s attention. Mrs. Hurst calls TifAni to the front of the room and has her write on the board, turning the grammar exercise into a public humiliation. TifAni complies rather than risk challenging a teacher in front of her classmates; she has been raised to obey that authority, even when she feels exposed.

Arthur reacts on her behalf. He curses at Mrs. Hurst, stands, and moves toward her, placing himself between the teacher and TifAni. His size and anger make the confrontation appear threatening to the people in the room. TifAni puts a hand on his arm, trying to intervene, while Mrs. Hurst calls for help. The moment reveals their closeness in a concrete way: Arthur does not remain a silent audience to TifAni’s humiliation, and she tries to restrain him even as he defends her.

Removal and Expulsion

Mr. Friedman comes to the front of the classroom and directs Arthur to go to Mr. Wright’s office. The narration notes that teachers are wary of touching students because of rumors about a required sexual-harassment seminar, so Mr. Friedman holds a hand above Arthur’s back rather than taking hold of him. Arthur shrugs off the gesture and leaves ahead of him. His departure ends the immediate confrontation, but it does not resolve what the school will do.

TifAni does not see Arthur again at school that day. After practice, she walks to his house, knocks repeatedly, and gets no answer. He is absent the following day too. At lunch, The Shark tells TifAni that Arthur has been expelled. TifAni is stunned by the finality of the decision and believes he did not do enough in the classroom incident to deserve it. The expulsion is therefore first presented not as a settled judgment of Arthur’s conduct, but through TifAni’s shock and sense that the punishment is out of proportion.

The Earlier Incident and the School’s Decision

The Shark explains that the classroom confrontation was not Arthur’s first disciplinary problem. She had heard that he was suspended the previous year for stomping on a fish during biology class. She was not present, and TifAni had not known about the incident. According to The Shark, Dean Barton and other boys dared Arthur to do it. The detail changes the immediate account: the expulsion followed an earlier suspension, even though TifAni had understood the classroom episode as an isolated conflict.

The Shark calls the earlier episode a possible final straw, rather than claiming to know the school’s reasoning. The exact decision-making process is not described. TifAni’s response is to focus on what she sees as the injustice of expelling Arthur while Dean Barton remains at Bradley. Her certainty about who deserves punishment differs sharply from the school’s apparent response to Arthur’s record, and the gap between those judgments becomes part of the tension surrounding the expulsion.

A Friendship Turns into Conflict

After hearing the news, TifAni returns to Arthur’s house. He lets her in, and they sit on his bed and pass a bowl between them. When she asks whether the expulsion is truly final, he confirms that it is. Her immediate anger remains directed at Dean Barton, whom she believes should have been expelled instead.

The conversation then shifts from the school’s decision to TifAni’s earlier choice not to pursue Dean Barton over his conduct toward her. Arthur reproaches her for believing she could redeem herself by taking action, then attacks her intelligence and self-worth. TifAni recognizes that she had understood their friendship as an alliance between equals, united against the school’s social hierarchy. Arthur’s contempt makes her reconsider that understanding: she now feels that he regarded her as a rejected outsider whom he had taken in, not as a friend who had chosen him in return. She answers by turning the argument toward Arthur’s fixation on Dean Barton. The exchange does not repair the hurt caused by the expulsion; it exposes a deeper fracture in what each thought the friendship meant.

Retrospective Significance

The later account of the Bradley attack gives Arthur’s expulsion an unsettling place in the larger narrative, but it does not establish that the expulsion caused the attack or that the school understood what Arthur would do. Afterward, psychologists examine Arthur and Ben Hunter’s journals, school records, and interviews with people who knew them. Their shared conclusion is that Arthur initiated the plan. The novel also complicates the public explanation that the pair acted because they were bullied: later evidence describes a broader and more deliberate motive for Arthur’s violence.

Seen in that wider context, the expulsion episode contributes to a portrait of Arthur that is not reducible to either TifAni’s loyal defense of him or the later public label of a dangerous student. The incident shows him protecting a friend, acting with uncontrolled anger, and carrying a disciplinary history TifAni does not know about. Its immediate consequence is separation from Bradley; its personal consequence is a rupture between Arthur and TifAni. Its retrospective force comes from the contrast between those intimate, unresolved events and the much larger violence whose meaning the survivors and the community later struggle to determine.