Firefighters rushed to Yorkshire Coast College's Lady Edith's Drive campus twice on Sunday night.
The Scarborough crew was called just after 8.30pm and again at 10pm when the automatic fire alarm system was activated due to a system fault.
Both times the system was reset.
Earlier in the day, at 3.45am, the crew were called out to Scalby Road after the glass was broken on an emergency fire alarm. The service said it had been set off "maliciously".