LONDON, April 26 (Reuters) - A schoolteacher attacked a pupil who was misbehaving in class by beating him around the head with a dumbbell and shouting "die, die, die," a court heard on Monday.
Peter Harvey, 50, bludgeoned the 14-year-old boy during a science lesson last July, the Press Association reported.
Harvey denies attempted murder and causing grievous bodily harm (GBH) with intent, but has admitted a charge of GBH.
Prosecutor Stuart Rafferty told Nottingham Crown Court Harvey was "well, happy and in a positive frame of mind" on the morning of the attack.
He said: "A girl who had behaviour difficulties was being disruptive and was messing about with a whiteboard and then started messing about with a window blind.
"He told her to stop and there were words between them. He seems to have pulled her away from the window by her bag on her shoulder and shouted at her and it was alleged he kicked her.
"She left the classroom in a state of tears and some of the class took exception to the way she had been treated and started calling him a psycho.
"He didn't seem to respond to that and told the class to get on with their work.
"The boy began to mess about with a wooden metre rule. He was wandering about the classroom with it, sword fighting with another pupil, that sort of high jinx."
Rafferty added: "He told him to put it down and he did. The boy then took out a metal bunsen burner stand and was waving it about in a similar way.
"Mr Harvey chased him around the classroom and it came to a point when the boy told him to "fuck off".
"That seems to have lit the blue touch paper because Mr Harvey grabbed him by his collar and started dragging him out of the classroom.
"He got him out of the classroom and down the corridor into a preparation room.
"He threw him to the ground and armed himself with a 3kg dumbbell and began to hit the boy about the head with it.
"He struck at least two blows to the head which caused serious injury, really serious injury.
"At the time the blows were being struck Mr Harvey was only heard to say one thing.
"What he was saying was "die, die, die"."
The court heard that one pupil tried to drag Harvey off the boy, who was lying on his back looking "frightened and confused".
The teacher was kneeling above him, raising the dumbbell to shoulder height for each of the blows, the jury was told. The schoolboy was left with a fractured right temple bone and severe cuts to his head.
The trial continues.