There's a push out there in America that calls for more data from schools. Why? Schools are now governed by a law from 2001 called No Child Left Behind. Schools are under pressure to prove their children are making adequate yearly progress. Data is compiled and reported and this adequate yearly progress (AYP) is determined. Administrators are using data from various programs to identify students who are weak in certain areas in order to better prepare them in those areas. They can also use data to determine which teachers are better in certain concepts and address those concepts with students who perform lower in these areas. School systems are hiring additional personnel to help compile this data for reports so administrators can see how students are improving in their classes. It can be an expensive endeavor for school systems.
There is an article with the Arizona Republic that explains this process pretty well.