Come to think about it, I was taught about astrology when I was in high school. But of course I was taught the mythology, the symbolism, and even the fallacy of the predictions that it claimed to be able to make. I certainly was not taught that it was true, just the opposite. And I think those lessons were very valuable. I only wish I had learned more about it back then.
And I think that perhaps I.D could be taught in the same way. I think it could be useful to teach kids about beliefs that some people hold, the fallacy of the design assumption, and the danger of mistaking pseudo-science for the real thing.