If you would like to change what the grading scale is (for example, A+ is 90%+ A is 85-89%, A- is 80-84% etc etc) follow these steps:

1. Click on the Course ID you wish to change

2. Click on the top left hamburger menu

and select Editor:

3.  Choose the Tools (wrench) in the top right:

4. Select Course Settings

5.  Scroll to the Grade scales section and choose ADD GRADE SCALE

6. Enter details of new grades. Choose ADD BRACKET to add another grade level, then click save

7. IF NECESSARY, delete any previous ways that an assignment can be graded to avoid conflict but clicking on the Grade Scale and choosing REMOVE THIS GRADE SCALE