NCLB Not Just Bad - It is Misleading

According to a commentary at the Wall Street Journal, NCLB is misleading: "A pass percentage is a bad standard for educational progress. Conceptually, "proficiency" has no objective meaning that lends itself to a cutoff. Administratively, the NCLB penalties for failure to make adequate progress give the states powerful incentives to make progress as easy to show as possible. A pass percentage throws away valuable information, telling you whether someone got over a bar, but not how high the bar was set or by how much the bar was cleared. Most importantly: If you are trying to measure progress in closing group differences, a comparison of changes in pass percentages is inherently misleading." How should scoring of standardized tests be changed?