Concerning editing and deleting student work in Canvas:
Chris,
Regarding our ongoing communication, I was able to determine the following: 1) Click on a student's score in Grades. 2) Next to the score is an arrow, which I clicked on. 3) I scrolled up to make my comments visible. 4) There was a pencil icon, which may allow me to edit the comment. 5) There was a trash can making it possible to discard the comment.
I will ask one of my students if I may edit one of my comments and also delete one in a specific module. This will provide me the experience to edit (if allowed) and delete as necessary in the future.
(I had read suggestions offered to other individuals in the forum for Canvas. They were not in agreement. I also reviewed the Guide which was not very helpful.)
Kevin
On a side note, in the past years, I have used iLearn, Moodle, Blackboard and now Canvas. "The jury is still out (undecided)" on which is the most user-friendly!)