Well, here we go...
Let me say first off that Intelligent Design has
no place whatsoever in the Science classroom. Intelligent Design has a major flaw that disqualifies from even being considered scientific:
It has no testable hypothesis. For anyone familiar with the scientific method, this spells doom (from a scientific standpoint) for Intelligent Design from the very beginning. Without a testable hypothesis, ID is reduced to a bunch or words written on paper. It doesn't matter how convincing these words sound, if they cannot be physically tested, they are no more than a hypothesis. (And yes, that is different from a theory, capital-T or otherwise.) Should you happen to know of any testable theories put forth by ID, please by all means share.
Although this may discredit ID from being taught as scientific fact, why then does it not warrant mention as an "alternative" to evolution in scientific textbooks? The answer is that the idea of an "alternative" to a scientific Theory is an absoultely ridiculous notion. Do people seek "alternatives" to gravity? If so, what would they be? (Of course, there's always that old quip, "There is no gravity. The Earth sucks."
) Science seeks to explain how phenomena operate. Once the mechanism has been explained, there is no room for another explanation. An alternative mechanism cannot operate in tandem with the proven mechanism, for if it did, then it would not be an alternative, but already part of the explanation. An alternative cannot operate instead of the explained mechanism. Since it has been shown that the proven mechanism (some times) causes the phenomena, the alternative's existence would mean that there is no causal decision whether the explained mechanism or the alternative causes the phenomena, leading us into the untestable realm of the supernatural, outside the grasp of science. If the proven explanation is false and the alternative is the only cause for the phenomena, then the explanation would have never been proven in the first place because there would never have a been a causal link to prove. We therefore reach an absurdity when we assume that an "alternative" explanation to a phenomena can exist, therefore an "alternative" explanation cannot exist.
Of course, the above assumes that evolution is in fact proven. Put shortly, yes, evolution has been proven. When a theory is termed a Theory (capital-T), this means that is has come to be accepted true in the scientific community as a result of irrefutable
experimental and therefore scientific results (notice - not
evidence). I can provide you with a wealth of links demonstrating this should you wish to see what I am talking about.
Finally, the concept of ID even as a non-scientific, non-testable entity is just STUPID. It is merely the continuation of supernatural rationalization as an explanation for something we don't understand and is bound to be disproven someday, as is the trend with supernatural explanations for natural phenomena (gravity, the age/origin/geology/orbit of the earth, reproduction of life, weather, seasons, ad infinitum). The most complex reasoning behind ID is "There appears to be irreducible complexity in our world. Irreducible complexity only arises out of irreducible complexity. Therefore some other irreducibly complex being must have initiated this complexity. We cannot explain who this being is." Let us assume that the first postulate is in fact true. Even with this assumption, the entire theory falls in on itself. Occam's razor says when two possible explanations are presented, always pick the simpler one that relies on known facts. We know we are here. We do not know if this being is/was existent. Therefore is it more logical to assume that the irreducible complexity we see has always existed. Of course, ID proponents will continue to throw pseudoscientific garbage in light of this fundamental logical flaw with their theory, but none of it can refute ID's underlying infeasability.
Then, there is always the shady politics behind ID, but I'll leave that for another day...