Problem
Yes. Instructors can change the correct answer to a test question after students have submitted attempts. The test will automatically be regraded.
Solution
In a content area, navigate to the test.
Click on the action link (arrow button) to view the test’s menu.
Select Edit the Test to edit test questions.
On the Test Canvas, click on the action link for the question and edit the question.
Click Submit after you edit.
This will edit the question and regrade student attempts to reflect the correct answer.