What is a 7 worth in gcse?

The highest grade is 9, while 1 is the lowest, not including a U (no grade). According to Ofqual, the exam regulator, grade 7 is equivalent to an A. Grade 8 is considered a strong A and grade 9 an A*. If you're looking at the math base, it's worth noting that the available grades are 5 to 1, so the grade limits will differ from those of the higher-level paper.