As a biology major interested in teaching highschool students, I'm the last person who wants ID taught in biology. Just on a principled level, it is not science and I don't think it should be taught in a science curriculum.
In spite of this, I'm having a little trouble articulating to people why it is such a big deal. What are some of problems that teaching ID in a biology curriculum would lead to? Would it give students an inadequate notion as to what science is? Would it open the way for other nonscientific theories? Would it interfere with their preparation for college? Infringe on the first ammendment? All of the above?