Drop lowest x grade does not function correctly in 1.9

Re: Drop lowest x grade does not function correctly in 1.9

by irina g -
Number of replies: 0
I am having the same problem, except that the calculations are inconsistent. Some students' lowest grade is dropped and others isn't. For example, I have two students who got the same grades on quizzes, 13 and 14 out of 15 possible. Category total is 10 possible.

One student has a category total as 9.33 (lowest grade of 13 dropped) 14/15 * 10=9.33

The other student has a category total as 9 (lowest grade not dropped) 13+14/30 * 10 =9

any ideas why this is happening in the same gradebook??

Thanks!