At the turn of the century, the United States was trying to come to grips with a serious education crisis. The country was lagging behind its international peers, and a half-century effort to erode racial disparities in school achievement had made little headway. Many people expected action from the federal government. George W. Bush and Barack…

It turns out that in complying with the requirements of No Child Left Behind (NCLB), some states have decided to be a whole lot more generous than others in determining whether students are proficient at math and reading. Because each state selects its own testing system and sets its own passing scores, there is no direct way to compare the…