The Gates Foundation's newest gift to American students: collecting lots of their personal data to help market nonfree software to them.

They also envisage recommending e-books, some of them surely covered by DRM and/or unjust contracts.

The InBloom software is described as "open source". I suppose this refers to some software used to access the site, and I also suppose this software is free but not copylefted so as to encourage using it in nonfree programs to foist onto schools and students.

A free, noncopylefted program is not an injustice in itself, but it is a weak point, making society prone to injustices.

Teachers don't need fancy software to "customize lessons in real time". They just need to listen to their students. But such adaptation is only possible if the class is small enough, and that would cost money. You'd have to start taxing the rich again.