Having an automatically ticking checklist allows the user to automatically complete an activity once a certain condition has been fulfilled.
Turn editing on
Click on the edit icon () next to the checklist activity.
In the checklist activity, go to Edit settings > Check-off when modules complete > Yes, cannot override.
When you are finished, press Save and return to course
When you change role to a student; the checklist, after an item is complete will look like this.