A Napier Boys' High School student was taken to Hawke's Bay Hospital in a moderate condition after being knocked unconscious in a fight filmed on school grounds.
The fight, on Tuesday about11.20am, was filmed and has been circulated widely on social media platforms.
It shows a one-on-one fight in which two boys drop their bags and square off.
One boy kicks the other in the legs, before striking him in the head.
The victim falls backwards, spinning and landing face down, motionless.