ID has no useful feature that would be of any benefit to study. Now witchcraft if true might be of benefit because you can alledgedly manipulate the current environment.
ID is ok to be taught, but not in science class. Science is about understanding natural processes and using that understanding to forecast, predict and manipulate the current state of affairs. ID, even if true, does none of that and is totally useless for manipulating today's world.
If you're interested in learning about evolution, visit The List-O-Links.
If you'd like to understand the concept of speciation, visit Micro-evolution, Macro-evolution, and Speciation.
If you're serious about debating this issue, see How to argue against a scientific theory.
If you're permanently stuck on stupid, but determined to post anyway, use the Evolution Troll's Toolkit.