Hi Peter, great question. You can always check student's progress in Administer students > Students to see who has reached 100%. However, that doesn't notify you directly. The workaround that you could do is ask your students on the last page to post a comment telling you that they're done. You could make that comment obligatory. (You can do that in Page settings). Then you subscribe to that page (bottom of the page) and enable platform and mail notifications (here) if you haven't yet.
If you have any further questions, I'll be happy to help!Reply