Advice for people that teach system administration?

I've been asked to write an article that will be read by people that teach system administration (and people that research how to best teach system administration).

Sadly I'm having writers block. I have too much to say, so I don't know where to start, or how to narrow it down to 1-2 main points.

My solution is to crowdsource this a bit. So...

What would you tell professors that are studying how to best teach system administration? Or, more importantly: If there is one thing such teachers/researchers should be told, what would it be?

Tell in this Google Form (or in the commments, but I'd prefer the form)

Thanks! Tom