FSM. Teach all three.
Creationism (Intelligent Design) was ruled to be purely religiion, not science, and it is soundly unconstitutional per the PA ruling a couple of years back.
For anyone actually interested in the facts of the case, rent the documentary "Evolution on Trial". Both side's arguments are explained in great detail. The jugde, BTW, was a conservative appointed by a R. president. The ID folks didn't just lose, they were completely destroyed and discredited, so much so that the judge was compelled to hand down a ruling that was much more far reaching than the anti-ID side could have ever hoped for.
Apparently, The Incubator is not aware of this, but, then again, she doesn't seem to be aware of much of anything at all.