This is the second time smoke has appeared in a Xenia school u less than two weeks.
On Oct. 25, students at Warner Middle School were sent home after smoke filled two of the classrooms. Insulation caught fire after a malfunction with a heat exchanger that was being worked on, said Xenia Schools Superintendent Dr. Deb Piotrowski.
Two workers were able to put the fire out before fire crews arrived, which caused heavy smoke.
The building was evacuated, and students taken to the nearby Nazarene Community Center to be picked up.
Warner was back in session the following day.