It all started with his pants.
"He has worn these pants to school before so I don't know why the pants were an issue anyway," said the mother of Fulton High School freshman Montel Castle, Kimberly Castle.
It ended with sore shoulders, scrapes, and bruises.
Fulton High School Freshman Montel Castle said Monday morning he was sent to In-school Suspension (ISS) for the rest of the day because of the holes in his pants.
That's where he met his ISS teaching assistant, Gary Hamilton, for the first time.
"I went down to ISS and I didn't have any work. I raised my hand and I said, 'Can I go get some work, sir?'" Montel sad. "He said, 'Ok.' He was cool. He wasn't mad or anything."
Montel went around the school and collected assignments from each of his classes.
"When I came back he was in a very bad mood. He said, 'What took you so long boy?'" Montel, 14, said.
Montel came back with his work, but forgot the hall pass.
"So then he's like, 'Where my hall pass at?' I said, 'I'm sorry, I set it down.' So he got mad at me and said, 'Go sit down in the hallway,'" Montel said.
"He got in my face and he said, 'You think you're tough.' I said, 'I don't think I'm tough. I don't know why you're getting all in my face.' And so I got in his face back. Then he threw me against the wall punched me in my face three times. I said, 'What are you doing? What are you beating on me for?'" Montel said.
Montel said Hamilton also slammed him to the ground. Montel also added a school security officer pulled Hamilton off of him.
"He was using profanity. He was just being out of control, angry," said Montel.
"I just decided to go ahead and take my son to the hospital because he said his head was hurting really bad," said Kimberly Castle.
The doctor's report came back clean.
A Knox County Schools security officer arrested Hamilton. He is charged with assault and currently in the Knox County Detention Center. Hamilton is on paid administrative leave until an investigation is complete.
"This is unreal. I can't believe any teacher would treat a kid like that," said Kimberly Castle.