When you edit questions in a Moodle Quiz, you are actually editing the question in the Moodle Question Bank. Any changes you make will affect any quizzes that include the question, including past quizzes. If you want to edit a question without affecting other quizzes that include it, you should instead make a copy of the question in the Moodle Question Bank and edit the copy. Alternatively, you could create a new question. For information beyond this article, please see Moodle documentation here.
Note: changing a quiz question affects in-progress quizzes differently. If a student has started a quiz and a question is changed, they will not see the changes in their version of the quiz. You will need to perform a quiz regrade on all in-progress quizzes to have questions updated.
1. Navigate to the course containing your quizzes. Select the menu "More", and then click "Question bank".
2. In the Question bank, select the category your question is in to locate it. Make any other filtering adjustments.
- To see all questions in your Question bank, select the category named "Top for [Class name]".
3. Once you have located your question, select the menu "Edit" and click "Duplicate".
4. You will be automatically directed to the settings for your new question, which will retain some of the qualities of the original. Change the name of the question, and make any other required edits.
5. Click "Save changes" at the bottom of the page when you are done.