You cannot prevent students from editing Discussion posts on a course-by-course basis, but instructors can see an edit history for discussion posts.
In the Threaded View:
- Click on the title of the student’s post to open the discussion post.
- Click to release the More Actions dropdown menu for the post.
- Choose History.
In the Reading View:
- Click on the title of the student’s post to open the discussion post.
- At the top of the page, click on the small arrow next to the post’s tile in order to release a dropdown menu.
- Choose View Post History.
Please note: You can modify your Discussion display settings by clicking on the Settings gear icon in the upper right corner of the Discussions area.