To grade a Moodle quiz anonymously, go to: COURSE / QUIZ NAME / PERMISSIONS
Under manual grading, you should see this:
Click the two trash cans to eliminate the non-editing teacher. After you do that, you should see this
Ensure non-editing teacher has disappeared.
In top right hand corner of the page, select the dropdown menu to the right of your name.
Select “Switch Role to…” and then select “non-editing teacher”.
On the landing page for the quiz, in the upper right hand corner, select the dropdown menu next to the gear icon and select “Manual grading”.
Select the question(s) you want to grade.
The item(s) should NOT have student names beside them.