Thanks,
Gary
P.S. I didn't see a forum that I thought this post might fit into, so I put it here in the General forum. If there is a better place to ask this question, please let me know.
Hi Gary,
I have tested core event and it seems working fine for both admin and teacher. There might be a chance, you forgot to subscribe core event rule by clicking on plus (+) symbol. However in activity monitoring when we select drop-down element it automatically get subscribed.