Have you ever taught a class?
As a sergeant in the US Army, I've had to teach a variety of classes, from field sanitation, to weapons maintenance, to Nuclear, Biological, and Chemical warfare procedures. I've seen good teachers and poor teachers over the years so there is more to teaching than standing up in front of a group of people and talking.
I've taken hundreds of training courses, from tape & slide show courses in an Army library to FAA flight simulators with instructor teams.
Before a pilot even gets to the simulator lab he takes months of ground school just on the various rules and regulations. The instructor covers the general subject and answers questions concerning details.
How many trainees can a trainer train simultaneously? one, ten, hundred, thousand?
It depends on the complexity of the course. I could teach a company of a hundred the step-by-step in stripping, cleaning and reassembly of a small arm, as well as the proper way to brush and floss. I suppose the same course could be shown on a big screen to thousands of pupils.
What about unconventional methods like pre-recorded, or video-conference lectures?
Those are
very conventional, as I took Army courses on cassette tape with a corresponding collection of slides on a carousel projector in an individual booth, back in 1980. VCR courses and lectures were just being introduced then. I took courses on land navigation, map reading, operating a TOW missile, target ranging methods, morse code, and as many as I could take tests for in an afternoon. Needless to say, my training records were insane...but counted for promotion.
Can you double-team a trainee?
I.e. can two different trainers train him in two different skills (like: one for navigation and one for computers), in the same period of time?
It looks like a bit of a train wreck but with proper coordination, I suppose it could be done. When I studied aviation, I had teams of trainers that taught various phases but never at the same time.
Is it maybe only possible for training in basic levels (1-3)?
Training is constant, all the way to master levels. It may be as minor as tweaking techniques or raising the bar on dealing with difficulty. In the Medieval Guild system, there were expectations on what an apprentice was able to do; The same for those who did the same job at journeyman, master and grand master levels.
I know you can spend xp on those levels without training, but I'm working a scenario where the players (grizzled veterans, with various levels in training) are trying to drill a green company of recruit fresh out of boot.
Spending xp is an assumption that some training is done individually:
"I'll spend XP, I can now speak German!" Really?
It's just that looking in army training and academic studies, it's very rare for teachers to actually sit with the same student one-on-one for more than a few hours a week top, and you usually train/study multiple skills at the same training period.
