Pardon the French, but what the @#$% is the 4.0 GPA scale?

<p>All IB School
7=A+
6=A-
5=B
4=C</p>

<p>Below 4- is failing. And there are +s and -s for each number grade. A 6+ would be a 6.33 and a 7- would equal a 6.67. No one has a 7.0 cumulative GPA. It's literally impossible to achieve. We also can't convert it over to a 4.0 scale because a 6.5/7 is an A to us but when converted to the American scale is a 3.7. It's very strange.</p>