Simply put bad bosses who fire good employees for no good reason pretty quickly find themselves in a position where no good employees will work for them and the performance of their department begins to fall. When that happens Bad Boss is replaced by his Boss.

That's assuming of course that the Boss chain isn't rotten all the way to the top. ;)

I have a lot of freinds and relatives who teach in public schools and it is pretty miserable out there. The pay is very low for the teachers, and there are too many kids per teacher, and there isn't money for supplies or materials - if we're going to make education mandatory, it needs to be more than a 12 year long subsidized daycare service.

And there is also the social and economic benefit to a country of having a educated and skilled population.