cypher,
couldn't of said it better myself...
lasiorhinus,
think of it more like a junior footy coach, they don't get paid to teach the youth what they know, I am sure their reward is watching the kids learn and develop their skills. Dont forget most of these students will still be at school, (hence the reason it is held during school holidays). Same applies here except it is only 10 days and it comes with free living and food.... plus cheap beer.
I was a student in 94 or 95 (I forget now). If I had an instructors rating I would be there in a flash.