They say you can't put a price on a good education, but it turns out you can calculate its carbon cost.
Research by Ofqual has revealed it takes 5.6kg of CO2 to prepare, print, sit, and mark one English Language GCSE exam.
That is equivalent to running the washing machine five times at 140°F (60°C) or driving 1.13 miles (1.82km) in a petrol car.
Most of the total emissions come from pupils and staff getting to the exam venue, but the heating and lighting of the venue are also significant factors.
This year, about 780,000 pupils sat an English language GCSE exam, creating 4,368 tonnes of CO2 for this paper alone.
In the first study of its kind, Ofqual looked at all the sources of emissions that go into creating a single GCSE exam.
They looked at every step of the process, from the development of the qualification to the disposal of the exam papers.
