[samirahmed]

what you say is very true. Asking questions in an environment of peers tends to depend on confidence.

Questioning everything and asking questions are often different things in a classroom environment.

A key premise of the Khan Academy is that students learning in the intimacy of their own space enables slower students to learn and excel

[ZeroGravitas]

In Sal Khan's TED talk he displays a graph and claims they repeatedly saw "slower" students catch up and excel. He then asked himself whether he (and the audience) had benefited not by being better than their classmates but more by luck that they didn't misunderstand (or simply miss) some early lesson and then get left behind as the class moved on before they had a chance to grasp it.