A small fire started in the Performing Arts Center at Hononegah School around 9:30 p.m. Sunday night.
The sprinkler system was able to put out the flames before the fire department arrived on the scene at 307 Salem Street.
No one was in the building when the fire started.
School officials said there is smoke and water damage, but no other areas of the high school were affected.
Classes are scheduled to go on as normal.