Fascinating. I teach and believe the devices should be more open. I've personally witnessed student agitation, anger, anxiety etc when barred from changing their wallpaper, from adding a bookmark to Chrome, from changing basic accessibility settings. I have a hard time seeing how we can lock these devices down any further.

Though I do believe schools need an edu version of YouTube. YouTube kids is too childish for older students. But regular YouTube has too much inappropriate stuff on it. That's a tough one.