In the UK ------ in the majority of cases
Any work done in class or for homework is normally given a mark out of ten........ 6/10
End-of-term and end-of-year examinations set in the school by the teachers would be given a percentage mark , out of a hundred, ......e.g. 63%
The external examinations which are taken at 16 , GCSE, and 18, A-levels, etc are given grades, usually A - E
University exams are usually given a percentage during the course. The final degrees are given as ....... first-class, second-class divided into 2.1 and 2.2, and third -class, and also as either Honours or Ordinary Degrees
However individual schools and universities have their own systems so it can be variable.
Hope that helps even if a litle late.
Si lo quiere en español, pidamelo, solo al final me di cuenta