The science curriculum in the United States is severely hampered by the religious vote as well. Not only are the sciences still seen as "geeky" and a stepping stone to careers in medicine and nursing rather than a career in the sciences themselves, but you're also dealing with a great deal of apathy from the people who should be learning it and a great deal of antagonism from the people who don't want to see it taught.
A professor of mine once spoke to his colleagues at Rice, in Texas, and he mentioned the material we were covering in a 400-level developmental genetics class. His friends were shocked - they not only wouldn't teach that material until 2nd year Masters level, but said that their undergraduate students did not have the background to understand it even if they had wanted to.
It's not just the sciences that suffer, it's all education (I think everyone is aware of the terrible material on international affairs and world history taught in the US). Even American teachers acknowledge that it seems the only way a student in the US can be guaranteed of a proper education short of private school is the IB program, which itself is seriously flawed.
And don't even get me started on the districts where they want to teach ID in the science curriculum. *bangs head against wall*