As of now, one has to manually remove all items on the to-do list, even if the due date has passed.  Also, there is no indicator if the assignment is completed or not.  Thus, if students are worried that they might accidently clear out an item that they have not completed yet, they have to manually open and check if they completed each assignment before removing them. 

All this can be avoided if the to-do list clears itself after the completion of an assignment (or at least an option to turn it on).  As items are automatically added, I would guess that it would not be too hard to implement automatic removal.

Thank you for your time and consideration!