Change the admin setting $CFG->grade_decimalpoints ( Site administration ► Grades ► Grade item settings -> Overall decimal points ) to 3. Create an assignment with a numeric grading scheme. Make sure to tick Offline grading worksheet under Feedback types . Click Save and display On the assignment's page, click View all submissions Under Grading action select Download grading worksheet Open the CSV file using a text editor. Check the values for the column under "Maximum Grade" Confirm that the values are formatted with 3 decimal places (e.g. 100.000). Set Grades for some of the students and save the CSV file. Back on the assignment's grading table page, select Upload grading worksheet . Upload the modified CSV file. Check the grades displayed under Confirm changes in grading worksheet Confirm that the grades are displayed with 3 decimal places. Confirm the changes and click Continue to go back to the grading table. On the grading table, confirm that the grades are displayed with 3 decimal places. Under the Options section, tick Quick grading . Confirm that the grades are displayed with 3 decimal places. Click Grade on one of the students that already have a grade. Check the text field beside Grade out of 100 . Confirm that the grade is displayed with 3 decimal places. If on 31 and master, go to the old grading page ( mod/assign/view.php?id=ASSIGNMENT_ID&action=grade ). Check the text field beside Grade out of 100 . Confirm that the grade is displayed with 3 decimal places. Login as a student whose assignment has already been graded. Go to the assignment's page. Confirm that the grade and the maximum grade are displayed with 3 decimal places. Login as a teacher again and return to the course page. Click Course administration -> Gradebook setup and select Course grade settings from the menu. Under Grade item settings change Overall decimal points to 4 and save the changes. Return to the assignment page. Repeat steps 4 to 19 above and verify that all grades are now displayed with 4 decimal places.