Did you even read your own comment?

"Almost everything we know about optimal techniques for learning is being applied in real educational institutions. But, not every teacher is as effective at applying them..."

I guess my reading comprehension must be totally shot, because I interpret that as meaning that almost everything we know about techniques for learning is being applied, but the problem is just that some teachers aren't applying these techniques correctly. You know, instead of about 80% of teaching not giving a shit and there being no consequence to that for them.