In Finland this is the system we use.
From classes 1-9 (age 7-16) 4 = not pass 10 = best possible and everything in between well, then it dpends on how the teacher classifies the points.
Then from 17-19 you can choose 2 lines of school, one is more theoretical and gives you higher basic knowledge in evertyhing from languages to biology, history, math etc, this is called a gymnasium/Lukio (has nothing to do with a gym) and the other one, also a 3 year exam, were you get a profession and basically study that + some languages and math to keep basic skills you've learnet so far up. Builder, Cook, Hairdresser, Computers and loads else, this is called a Yrkesskola/Ammattikoulu.
In the Gymnasiums you have the same scaling as earlier except in the ending exams were the scaling is very different.
In the Yrkesskola the scaling of tests etc are from 1 - 3, yeah 1 = very bad, 2 = mediocre and 3 = very good. Not really sure which system is better, I guess both have their ups and downs.