[Grades] What If" grades to place an "EX" or remove the grade from consideration

Problem statement:

We have heard from instructors about a problem with the What If Grades, and the problem is that student's can't use an "EX" to remove a grade from consideration. Thus, this causes confusion as student's aren't able to fully manipulate and see different grading scenarios. One use case of this would be a student wanting to remove a specific grade from consideration to see how their grades would change.

Proposed solution:

The solution would be to add the ability to have students and all roles use an "EX" to remove a grade from consideration to allow for more flexiblity for students and a greater functionality of What If Grades. The reason why this is important is that it would reduce confusion from students, and make it more clear for students and instructors on how to see the impact of What If removing grades would have on their grades.

User role(s):

admin,instructor,student