I remind the hon. Gentleman that Ofqual has been clear that it is confident that standards have been maintained across the GCSEs. I also remind him that the study and taking of GCSEs in science in single subjects has doubled in recent years. I further remind him—and hope he celebrates the fact—that our 14-year-olds are the best in Europe at science, thanks to the education they receive in our maintained schools. As far as the IGCSE is concerned, the jury is still out. As I recall, the maths IGSCE, which is very popular among certain members of the independent sector, does not have a non-calculator paper, whereas I think it is important that we assess mental arithmetic and give people that sort of rigour, free of the calculator.