JUDI Newman has promised that security measures will be stepped up at North Rockhampton State High School after vandals smashed windows and let off a fire extinguisher outside a classroom.
The principal of the school said they would put strategies in place to deter and monitor trespassers, and were working with police to track down the offenders.
"It's disappointing that vandalism occurred because it's so senseless," she said.
"I'd rather that money go towards teaching and learning, rather than smashed glass."
The vandals stole a fire extinguisher from a classroom by reaching through a window they smashed with a brick.
They discharged the extinguisher outside.
The windows were repaired and the mess cleaned on Monday morning to avoid disrupting school.
Police are continuing their investigation and are seeking any information from the public that may assist them.
The trespass was believed to have occurred from 1pm and 7pm between Friday and Sunday.