Bush was at a loss what to do next, he should have took command, got up, informed the teacher and the class that he has to leave immediatley as there's a national emergency and headed out to be briefed on the fly while making decisions and issuing orders, like targeting the Torah Bora region of Afganistan with high yield thermonuclear warheads. Sadly it didn't happen.
We were screwed either way, I'm pretty sure "An Inconvienient Truth" Gore would've probably acted much worse than Bush. With Gore, we would have been hit with second 9-11 already.