excellent, well done, very good, good, quite good, not bad, not so good, or bad?

[chibi]

I'm confusing using the words to judge someone's result.
For example, the highest mark is 10
10: excellent
8-9: well done
is that right?
So what about others?

Could you please make it clearer? Thanks in advance!

[Hi_there_Carl]

Any grading scale is subjective. It can be defined anyway you want just be consistent in application. In the US it is common to use the following scales.

Letter Points Meaning
A 9-10 Excellent
B 8-9 Very Good
C 7-8 Average
D 6-7 Below Average
F 0-6 Failing

I hope this helps,

[chibi]

yeah! I see! Thank you very much! So what about in spoken language?

[blouen]

Any grading scale is subjective. It can be defined anyway you want just be consistent in application. In the US it is common to use the following scales.

Letter Points Meaning
A 9-10 Excellent
B 8-9 Very Good
C 7-8 Average
D 6-7 Below Average
F 0-6 Failing

I hope this helps,

Then 11 - Perfect!