Additional staff were soon on scene to assist their colleagues who had detained the offender.
No lockdown was required and no one suffered any injuries.
“This incident was over incredibly quickly, and I would like to acknowledge the staff’s courage in taking action to stop this young man in his tracks,” Rickards said.
“I know this will be concerning to many in our community, and we are investigating what has taken place this afternoon.
“What I can say is that police are working closely with the school and further charges may be likely.”
The 16-year-old male is currently facing charges of threats to kill, assaults Police, wilful damage and trespass.