I want the letter grade boundary to go out to 2 decimal places (e.g., 93.33%) rather than the default of 0 decimal places (e.g., 93%). Is there any way I can change do this?
You can. Download our (lsu) custom_letters contrib from cvs.Moodle.org and overwrite the files in your grade/edit/letters folder. This allows letter grades to be based on up to 5 decimal places.