Firefighters were called to tackle a blaze on the grounds of Kingswood School on Gainsborough Road, Corby, on Monday night, November 5.
However, it was not the school itself which was ablaze – but builders burning used building materials and the fire had got out of control.
Kevin Gormley, sports and leisure supervisor for the school, said: “The school wasn’t on fire like everyone thought.
“It was just left over building materials, from the knocking down of an old building on school grounds. It was just these being burnt that got out of hand.”