Is there a way to ungrade or reset just one student's quiz in Moodle 3.1?
yes, it is possible with the function User override (sorry that the name is not 100% exact, I work with the German version). Here is how I would do it:
- Go to Quiz>Settings> User override
- Select the user and in the option "Allowed tries" select the number of tries.
I suppose that you'll have to delete the first try or select the second try manually - but that would work, I guess.
Hope it helped!
Actually, you can go into the Attempts and just delete the attempt from that page.