1. in the Administration block, click reset on your course page
2. Expand the section called roles
3. Click student and ensure it is highlighted
4. Scroll to the bottom and click reset course
5. Confirm ok continue to unenrol users
6. All students will now be unenrolled and deleted from the course.
Please note - this action will apply to all users with the role "student" so if a teacher has joined the course as a student, they will also be deleted from the course during this process.
