It happened around 12:41 p.m.
Officials say all students and personnel were moved to the Church of the Brethren on Oak View Drive.
Columbia Gas personnel was able to clear the school of any danger, and allowed students and staff to reenter the building.
Officials say parents still wishing to pick their children up early may do so at the school. Students will otherwise be dismissed from the building at regular dismissal time.
Officials say no injuries were reported.