This is why you need a privatized school system in America.
Should such a system be initiated, then schools would have the power to decide if some nut job's viewpoint is accepted curriculum or not - and this goes for whatever your worldview is (atheist, theist, ID-er/creationist, or hard evolutionist). It also enables the public to ensure that their kinds aren't being indoctrinated by an extremist view - if you don't like Sister Beatrice teaching that Jesus created the earth in 6 days, then you can take your kid out and plug 'em into a school across the street.
For every McLeroy, you can easily have someone on the other side of the fence that may want to revise history in the other direction. If individual schools have the ability to decide what is taught, without fear of a government institution destroying them, then common sense will win out, and kids will be taught properly.
Back from the dead, I'm afraid.
