One it can be tracked you can also utilize the in video capabilities to have references and other things click able in the video without leaving the lesson. It would show how engaged in particular topics they are as well providing better lesson plans. You could also put in links to more advanced topics or to more building block topics based on understanding of a lesson. Not to mention how schools could utilize it for other more mundane things like fundraisers (my kids going to kill it for those candy sales lol). You'd be surprised how much video and Internet kids use in school these days.