Delete discussion board thread
Students can edit and delete their own discussion board post or thread only if the instructor has enabled those settings.
1. Click on your course in the My Courses module.
2. In the course menu, click on Discussion Board.
3. Click on the forum with the thread you would like to delete.
4. Click on the thread you would like to delete.
5. Go to the original post that you created the thread with.
6. Hover your mouse over the original post, and click the Delete button once it appears.
7. When the warning message comes up, click OK.
NOTE: Deleting the original post in the thread deletes the thread and all the replies to the post.