A British exam sat by around 16 year olds. Maths and
English Language are compulsory, and at least 5 are required.
These were graded A* to G (with A* being
the highest and G the lowest) but now most are graded 9-1 - with 9 the highest and 1 tge lowest.
To pass a GCSE, you need a minimum of grade 4/C (D and E are
technically passes but are worth nothing).