It would, to me, be a far more fascinating experiment to not teach these ideas at all and see what people choose to believe on their own.

[edit]
Oh uh, more on-topic: it'll never work. Public schools in this country conform to policies set by universally adhered-to laws that are enforced by one body. There too many religious faiths, not to mention offshoots, you cannot just say, "LEMME SPEAK TO THE LEADER OF THE CHRISTIAN RELIGION" and discuss a change in the teaching policies in their youth groups.

[edit#2]
To be more serious, I do think that if we're going to teach things of this nature in schools, we should give our children a complete education. It's also the democratic way: for our public school system to only teach an admittedly narrow range of belief structures is, as far as I can see, unconstitutional, not to mention horrific.