Like Stephen, I agree with Roger Schank's observation that many things are not discussed, or even forbidden to be discussed in school environment.
I understand and totally agree that "School as an instrument of indoctrination" should be made more transparent and acknowleged.
My question is, "Is there anything topic that *really* should NOT be mentioned?" E.g. the debate between evolution theory and creation theory. Should the latter, being totally rubbish, be allowed at all? (OK, this is not the best example! But I hope you get my point!)