I don't think he meant it should be taught in the sense you are thinking...
I think he meant more of a study in different dogmas, highlighting the points of contention between each group... etc.. much like a sociology class...
He is right... If we chose to ignore religion, and the next generation is completely ignorant to whats out there, how can we ever hope to understand the international community...
Would you offer a jewish guy, or a muslim a strip of bacon? Of course not... But this is because you have been taught one of the dogmatic principals of their religions...
He's not talking pulpits... he's talking textbooks...
Much like my point that you can never understand the renessance, crusades, middle ages, etc without properly understanding the religious motiviations involved... (sorry for taking it back to history... but thats my major
)

About 5 - 10 years ago I went to Primary school in
Victoria. About once a week we had a 'Religious Education' lesson for about an hour. It was pretty cool, we just read some parts of the New
Testament, and also the basics about God.
