Bonjour
French schools use a 20 points grading. O for "worse", and 20 for "best" as English schools use letters from A to D; A being the best and D the worst. They also use + (plus) or - (minus) to increase or decrease the grade.
Then, you have a column with points to give an appreciation on the effort done.
Bonne journée ☺☺☺
