I don’t think that standards for schools are necessarily bad. Still, Kevin is on to something here:

The question is whether NCLB’s requirement of 100% proficiency by 2014 is achievable, and the answer, as almost everyone in the article acknowledges, is no. 100% isn’t achievable for anything. Everyone knows that.
[…] Question: Why would NCLB mandate an obviously unmeetable standard? And now that it’s up for renewal, why would Republicans continue to insist on that obviously unmeetable standard?

Answer: Because the 100% goal isn’t just rhetorical. It comes with penalties. If you don’t meet the standard, you lose money, you’re officially deemed a “failing school,” and your students are eligible to transfer to other schools. And needless to say, by 2014 there won’t be any satisfactory public schools to send them to because 99% of them won’t have met the standard.

Followup bonus question: What incentive does anyone have to label 99% of America’s public schools as failures? That’s crazy, isn’t it?

Answer: Anyone who wants the public to believe that public schools are failures. This would primarily consist of conservatives who want to break teachers unions and evangelicals who want to build political momentum for private school vouchers. The whole point of NCLB for these people is to make sure that as many public schools as possible are officially deemed failures.