The Subplot of the Assault on Mr. Carlson
RageCharlie's attack on his chemistry teacher with a pipe wrench.
increasing
Bearing strength in each event
decreasing
The Classroom Incident

The Pipe Wrench
The Humiliation
Mr. Carlson calls Charlie to the board to solve a physics problem. Charlie fails, and Carlson mocks him. Charlie snaps.
The Attack
Charlie pulls out a pipe wrench and strikes Carlson in the head. Carlson falls, bleeding. Charlie walks out.
The Aftermath
Carlson is hospitalized with a hairline fracture and brain splinters. Charlie is suspended and faces possible expulsion.
The Apology

The Forced Apology
The Meeting
Charlie is forced to apologize to Mr. Carlson and his wife. He feels no remorse. The apology is insincere.
The Aftermath
Charlie is sent to see Don Grace for counseling. He resents the therapy and becomes more determined to rebel.
The Escalation
After this, Charlie begins carrying his father's pistol to school. The assault on Carlson is a precursor to the hostage crisis.
March 3, the year of the crisis
After the assault, before the hostage crisis