The problem here is that you are talking about a highly complex concept, which is education (and cognitive sciences), while having pour knowledge about it.
Yes of course. And some of them can even go far. But the problem is way beyond.
What’s done in schools have always been very retarded in comparison to what cognitive science and educative methodologies teach.
As you were younger, most of you have already made complaints about how what you learn about school has no sense. Everyday, somewhere in the world, a teenager asks his teacher why are maths for. And almost every math teacher answers agressively because he’s clueless.
Cognitive sciences teach us that giving sense to our learnings is one of the first thing we should do. When I give a maths lesson, I don’t wait for my students to ask. I ask them first “Why are we learning this?” And we search together. The result is that the students memorize 10 times better what they learn because they know they learn it for a reason.
This was just a poor example of how schools systems lack of knowledge impeach them to teach well.
And I have dozens of these kinds of example. Poor use of socioconstructivist systems, no working on self esteem, no attempts to construct a positive representation of knowledge, learning or school, … You name it!