I want to ask about Japanese grading system. The college I am attending use the following system: A+ (4.3), A (4.0), B(3.0), C(2.0), and D(0). I got A in a course which I think is good enough but it might also be good to know the correspondence between these level scores to the percentage intervals? A Wikipedia article uses a different letter score designation so I guess the interval used there might not be valid when applied to my college's.