What can a teacher do that...

• you can't talk to directly? (YouTube, FreeCodeCamp)
• you can talk to online/remote? (Remote University, code camps)
• is on-site with you for a few hours a week? (Regular university, apprenticeship)

I did all of these modes, but had the impression that teachers wouldn't focus on what they could do best when they talked to the students, but did many things that didn't require them to be there at all. Like wasting time with code examples, the students could very well do on their own so that not enough time was left to work on more important problems.

What do you think?