To Bulk Edit a Course Description for a Grade Plan:
  1. Impersonate a teacher whose class is open to edit grade plans for
  2. Go to a Class (that hopefully has more than 1 student in it)
  3. Select the Grading Tab
  4. Click Bulk Edit under the Grade Plan
  5. Check Select All, this will only work if there is more than 1 student, otherwise you will just click that student. 
  6. Select a grade from the drop down, Click Add to add a Course Description or Student Comment
  7. Mark the Box for Mark students as ready for review if you want
  8. Click Save & Close