One of the greatest failings of today's Conservatives (and many Democrats who have bought into the market is always right philosophy) is the inability to look at the actual facts and reconsider your beliefs. Yet, one Conservative critic of the Public Schools has shown that the real world data is more important than her original assumptions.
Listen to this piece on NPR where Diane Ravitch, the assistant Secretary to Education for Bush I, comes out against No Child Left Behind as a failing program because the underlying assumptions were shown to be wrong and that the way the program works is damaging our children and our schools. One hopes that someone in the White House is listening.
[Note: this is a very human flaw and is one to which everyone is susceptible. The only real defense is to be able to use critical thinking to give appropriate weight to what the data says and having the ability/humility to say I am not fallible and am willing to learn from real world observations.]