After changing point possible in a quiz, will the system regrade automatically. If not, can it?
Welcome, Shannon. Check out this thread to see if it answers your question.
Regrading a quiz...
If you're using the old quizzes, when you change the points on a quiz after students have taken it Canvas will not regrade the quiz. However, you can go into the gradebook or speedgrader and manually change the grades.
If you're using Quizzes.Next then it may be different, but I'm still using the old quizzes so I'm not sure.
Retrieving data ...