Class Size Matters and New York City Public School Advocate discusses the problem with creating, collecting, and sharing student data from test scores etc.... Student data should be kept private, not shared or sold to corporations.
ACLU testimony document here
Great grassroots site about the importance and efforts of data privacy is here.
Another article that explains the concern about the data privacy of our children.
A good article that explains who wants our children's data and why. It also explains why this is a big concern. Follow the money. What about privacy?