In subjects such as English and history, the exams will testessay writing, while in maths and science there will be a greater focus on quantitative problem solving.
The latest warning came after Rodong Sinmun, a state newspaper, carried an essay on Saturday saying that a nuclear test was "the demand of the people".
It is set up to spread the awareness of preventing devastating fires and students simply need to read the online essay on the use of fire sprinklers (which is good information to have anyway) and answer an online test and then are entered into a drawing for a scholarship.