I'm in the US, in undergrad we actually got a "grade point" in each class--the scale was the same generally, but for example a 95-100% was a 4.0, 94% was 3.9, 93 was 3.8, 90 was 3.5 and so on. This was the case in most classes but occasionally there was a yakker in a curved class, I had a 2-quarter class (the hardest class, and the most awesome class, I ever took in undergrad) where I got a 58% in the first quarter and it was a 2.6, then I stepped it up and got an 86% in the second quarter and it was a 2.1.
That class busted my major GPA big time, that class single-handedly brought it down from like a 3.7 to a 3.4.
At any rate the system was a lil weird but more so overly complicated, and overall it probably worked to my advantage because I got a lot of B+ grades that went on my GPA as 3.3-3.4 instead of 3.0 (as it probably would have in a standard grading system).
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I know I made them a promise but those are just words, and words can get weird.
I think they made themselves perfectly clear.