Snowballs whizzed through the air as students tried to dodge them.
The headteacher, Mr Hall stood watching in his long black coat as white flakes floated softly to the ground.
Mr Hall turned to go and a ball of ice crashed into his back then crumbled to the floor. Students stood like statues in horror.
He crouched to the floor and shaped a ball from the snow in his gloved hands.
As he stood with his arm ready to fire he cheerfully roared, “Right, who threw that!?”