At this time, there isn't a way for the system to automatically deduct points from an assignment if it is submitted past the due date. However, there is a work-around available to you.
Reopen the assignment and manually reduce grades
If you choose to reopen an assignment that has closed (for all students or via a User Override for students you would like to allow reentry), you can deduct points manually from within the gradebook for those who submit the assignment past the original closing date.
From your instructor dashboard…
- Select Go to Course.
- Select Gradebook in the menu on the left.
- Select Turn editing on in the upper-right corner.
- Type in the new grade amount.
- Select Save changes at the bottom.
See Override Grades (Assignment as a Whole section of article) for instruction with screenshots.
Manually overridden grades will appear shaded yellow.
HINT: View all attempts made at the assignment and sort by date completed to easily determine students for whom grades need to be reduced. If more than one attempt was made by a student, the graded attempt (final grade in gradebook) is shaded blue.
- Go to the Gradebook and click on the column header for the assignment.
- Click on the Completed column header to sort (Click again if need to reverse sorted order).
- Take a screenshot or make a list of students submitting late. Follow steps above to modify grades.