My school's system makes no sense.A "B" is "superior" yet an "A" is excellent.I tend to think of the word "superior" as indicative of the highest level of achievement. While "excellent" is still a high level of achievement, I doubt it connotes a higher level than "superior." Thus, this "grading key" makes no sense.http://www.law.suffolk.edu/offices/registrar/grades.cfm
I kind of agree w. your schools grading characterizations. Superior just means that it is better than some, higher. So a C is superior than a D, and an A is superior than a B. So, if you have a B- curve like my school, then B is superior to most people. So it is appropriate.On the other hand, excellent tends to imply that someone excels. They do above and beyond what was called for, not just above. I think an A would be reflective of this.I don't know if people agree. I have nothing to back this up, it is just my personal understanding/interpretation of those terms.