A teenage girl has been arrested after a student was stabbed at a school in regional New South Wales.

Emergency services were called to Canobolas Rural Technology High School in Orange about 1pm after reports a student had been stabbed.

Police found a 16-year-old girl suffering stab wounds to her chest and arm.

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She was treated by ambulance units at the scene and has since been taken to Orange Health Service in a stable condition.

"A 15-year-old girl was arrested at the scene and taken to Orange Police Station where she is assisting police with inquiries," NSW Police said in a statement.

Officers will hold a press conference shortly to address the incident.