points to get on 20, following rules are used by a lot of professors ==>
20/20 is impossible, no one is perfect..
19/20 is almost perfect, not even I (the professor) is that good.
18/20 thats for me, I am the professor, I know my stuff, I know this course, I know more then you, 18 is for me, the teacher.
17/20 , WOW you are a good student, you are almost ready to become a professor yourself, interested in becoming a phd student and work for me?
16/20 very good examen, you are one of the best!
15/20 you are very good, top class student
14/20 top student! did very well
13/20 you did great, its good, a little bit more luck next time and you get distinction.
12/20 you are better then average
11/20 average
10/20 you just made it, thats good, you dont need more then 10 to pass.
9/20 too bad, you migh have passed it with some luck..
Remember: when you get 68% in belgium you are awarded with distinction!
Another funny part of examens: you get to learn 1500 -2000 pages and when you take your exam they ask you 1 (when you are lucky 2 or 3) questions regarding 0.5-1 page of the 2000 pages you learnt... very very funny...