Sadly, too many companies and some nefarious people want access to student data. It is of the utmost importance that any tool purchased honors student privacy. You must do your due diligence and read the fine print.
What does the tool do with student data? Who owns the student data? Who owns teacher data? Though reading the fine print is tedious, it is necessary when selecting the right tools that ensure student privacy.
To learn more about the 17 Deadly Sins of Flipped Learning Technology Selection, you can take the free course at http://learn.FLGlobal.org