Once you publish a quiz and make it available to your students, you can make changes to the quiz. Original quiz data is retained as part of any existing student submissions. However, students who have already opened or completed the quiz will not see any changes you make, which may affect their grades. These types of changes include adding new questions or deleting questions from the original quiz.
Additionally, if you change only the point value of the quiz, the student's submitted quiz will show the updated point value, but the current grade won't change in the Gradebook.
If you only need to make changes to existing quiz questions, after editing the quiz you can use quiz regrade to edit certain types of quizzes, or you can add fudge points to individual student quiz scores using SpeedGrader. You can also moderate the quiz to give additional attempts.
Note: Changing the until date for a published quiz will not alter the availability and auto-submit time for students with in-progress submissions.
Locate the quiz you want to edit and click the Settings icon . Click the Edit link .
To edit quiz settings, click the Details tab . To edit quiz questions, click the Questions tab .
Make the required edits to your quiz.
Once you have edited the quiz, you can notify the students in your course that the quiz has changed by selecting the Notify users this quiz has changed check box. The notification will be sent to any students who have enabled the Course Content option in their notification preferences, including students who have already completed the quiz.
Note that students will always receive a notification if you change the due date of the quiz regardless of whether you select this check box.
Save It Now
If you exit the quiz without saving, Canvas will display a message indicating you have made changes to the questions in the quiz that cannot be viewed by students. To ensure students are seeing the most current version of the quiz, click the Save It Now button.
Moderate This Quiz
You can also moderate the quiz to grant students extra attempts, grant extra time for timed quizzes, and manually unlock quiz attempts. To moderate the quiz, click the Moderate This Quiz link.