Who's Using The Data Mined From Students?

Now along with the state databases we've just talked about, there are a lot of private companies that are involved in education. Software tech giants, like Google and Amazon, are involved, as are companies you may be less familiar with. Names like Knewton - that's K-N-E-W - or LearnSprout. Politico senior education reporter Stephanie Simon has talking with some of those companies for a lengthy investigation on the data mining of children. Stephanie, welcome.