No Child Left Behind does not hold teachers and schools more accountable, it simply makes education far worse for all children. It leaves all children, and thus our own future, behind and it and Obama's continuation of it needs to be stopped. NCLB is quite simply the biggest educational disaster in our nations history.
The No Child Left Behind Act leaves teachers and schools worried only about passing certain tests. Those tests have been used to falsely prop up the quality of a school. Look at the Atlanta school district where a massive effort took place to cheat on the NCLB tests. It is a poor standard on which we should judge our schools and teachers.