When you export the grades to an excel sheet from GRBK2, the value of
> column for grade is something like "A(98.5)%" or "B(88%)" , the faculty
> could not sort the grade field. Sometimes they do want to sort the grade and
> draw the curve for the whole class. The desired export column for grade (or
> export one more field which just contains the letter grade, not the letter
> grade with the percentage.)