It's a problem with a lot of private schools, and home environments really, but not so much in public schools. Even then its usually just a topic that's skimmed over, and you have kids that are just ignorant about evolution (or dont care) rather than militantly against it. Here in Texas i can say that the Life Science curriculum standards (TEKS, aka what the STAAR test follows) are pretty solid, even including the multiple sources of evidence for evolution.
Lessee if I can find em... these are essentially what teachers make lesson plans from.
Quote:
(7) Science concepts. The student knows evolutionary theory is a scientific explanation for the unity and diversity of life. The student is expected to:
(A) analyze and evaluate how evidence of common ancestry among groups is provided by the fossil record, biogeography, and homologies, including anatomical, molecular, and developmental;
(B) analyze and evaluate scientific explanations concerning any data of sudden appearance, stasis, and sequential nature of groups in the fossil record;
(C) analyze and evaluate how natural selection produces change in populations, not individuals;
(D) analyze and evaluate how the elements of natural selection, including inherited variation, the potential of a population to produce more offspring than can survive, and a finite supply of environmental resources, result in differential reproductive success;
(E) analyze and evaluate the relationship of natural selection to adaptation and to the development of diversity in and among species;
(F) analyze and evaluate the effects of other evolutionary mechanisms, including genetic drift, gene flow, mutation, and recombination; and
(G) analyze and evaluate scientific explanations concerning the complexity of the cell.
Pretty thorough. Of course these are considered the minimum standards, teachers can throw in whatever they want.
But yeah in my small-town public school experience we were taught evolution just fine, something about the creationism debate mighta been mentioned just so we know that a controversy exists. Most of the straight-edge Christians I knew just said "I know how it works I just don't believe in it", and they never really thought it was something important to debate or think about outside of class. It just isn't relevant to them and not a big enough deal to fuss about.