There are two types of courses that should have some face to face presence:
1. Public Peaking. Getting up in front of an audience repeatedly and Mastering nonverbal queues from a live audience is key. Of course a toast masters or other organization can help.
2. Chemistry lab. I hope I don’t need to explain that one.
The Navy sent me through a six week course when I was detailed to an instructor billet. I learned how to prepare lesson plans and speak effectively to a crowd. It was incredibly valuable and I still use these skills regularly.