Well I disagree to an extent. Where Christian teachings do deal with scientific issues, such as creation, then a fair examination of the evidence is in order.
And there is evidence. There are scientists who point to the Cambrian explosion and the fossil record as evidence of something other than evolution. There are scientists who interpret geologic findings as supportive of a massive water catastrophe and pointing to something different than Old Earth. Both interpretations should be explored.
But I agree that a theory shouldn't be presented simply because it is Christian, but where there is evidence for and against a popular theory, then it should be examined.
The body of work in favor of evolution is larger than the body of work in favor of ID. And I'm o.k. with that influencing the amount of time ID has in the classroom, even though it means ID won't get as much time. Guided evolution being the more popular theory is likewise going to be limited to a discussion of what evidence scientists consider that causes them to conclude guided evolution and it shouldn't be simply that they believe in the Bible. But where the complexity of higher organisms causes them to doubt evolution then present that argument. And present along with it the evolutionist's claim that complexity is no barrier to evolution.
Again, the point is, if you are only presenting one side, you aren't teaching the kids to think critically. Or to keep an open mind. And I really think if science teaches us anything, it should include that we don't know everything and that we should keep questioning and testing, even when we think we know something.