Classes continue as normal today at the San Juan North Secondary School after a fire ignited in one of the classrooms on Block C on Wednesday.
Acting Chief Fire Officer Andy Hutchinson said the matter was being investigated to determine the cause of the blaze.
Meanwhile, Minister of Education Dr Nyan Gadsby-Dolly confirmed that there were no injuries.
CNC3 News received video footage of the aftermath of the fire, dozens of books were damaged and those recording could be heard being thankful that the fire did not spread.