Choice. The concept that underpins No Child Left Behind seems simple enough, even within the complex realm of education. If a school isn’t delivering good results, students have the choice to leave. But as East Aurora parents have found out, concept can be outweighed by reality — and money. District 131 has not met NCLB guidelines for more than two consecutive years, meaning its middle and high school students should have a chance to go elsewhere. Unlike the much larger U-46 district based in Elgin, the small district has no in-district alternatives to offer. And surrounding school districts have again said “no thanks”