If you mean 100% grade, the answer is a 45 degree angle.
Fail.
The answer depends on the grade boundaries.
90-100
It's an fantastic grade. I say 85-100 is a good grade
65
If you mean 100% grade, the answer is a 45 degree angle.
A+
The best grade should be a 100.
89% B+
100/100 is the maximum grade that you can get in French.
67 rounds to 100 whatever grade you're in.
Fail.
The answer depends on the grade boundaries.
Assuming you only had a single grade of 100, a second grade of 40 would give you an average of 70. The grade corresponding to that would depend on what range of percentages corresponds to what grade.
about 90
A 100% is totally an A+.