Actually, if I may correct, the word is grade, not number. ”Number” is a direct translation from the Finnish word ”numero” and therefore an easy mistake to make, however, the correct word is actually grade. My grade was nine. I got tens in the school I went to before, but then I switched to an English school and the standards got higher by quite a large amount, as in the current school the subject is the same as that of students who are native English speakers. Therefore, nine and not ten. In a Finnish school, it was ten.