View the classrooms of the world as incubators. Yes, for the future success of our planet. 

What do incubators do? They preserve a perfect environment. There is no stress. There is as much peace as possible. No outside influences are allowed. No germs, no pollutants are permitted to permeate the perimeter.
Think about what the classroom has become: A testing ground; A battle ground. There is no peace. There is no harmony. There is no balance.
Any wonder that we are failing?