NCLB waivers and grading

In the future, a principal in Idaho could celebrate if his school got a score of 99 from the state. But move the school to Arizona, and that score could push a principal to look for a new job.
As more states move to assign letter grades, stars, and other ratings to schools through their federal No Child Left Behind Act waiver applications, the diversity of the plans shows that getting an A or an F would mean different things in different states. (Andrew Ujifusa at Education Week)