Wow, a +5 interesting! I'm glad to see there are other that agree with this.
I am amazed how much time people spend blaming parents, teachers and systems for the failure of children. It couldn't possibly be the children's fault could it? While parents, teachers and the system are all important for structuring and supporting an environment for children to succeed in, they can't do squat for a brat that won't to pay attention in class.
Eduction should be as much a privilege as a right. If we were to establish a meritocracy among students and actually reward intelligence more than we reward athletic ability we might see some real advancements in learning.
Everyone should have the opportunity to get an education but if they squander that opportunity, why keep them around to distract everyone else and waste the teacher's time? Put them to work and show them where their life is headed, if they want another chance at education put them in some remedial classes with the opportunity to work themselves up to better classes if they show some initiative and ability.