1. Go to Core > Users/Access > Profile
  2. Select Manage Roles
  3. Click on the Role to edit (i.e. Teacher)
  4. Select Tasks
  5. Click Edit
  6. Un-mark both boxes next to the first line for Record Grades
Record grades for classes only
  1. At the top of the screen, click Save & Exit
  2. Have users sign out and sign back in for the change to take effect