Can confirm no-BYOD policy is typical. I had to whine directly and without invitation to school principal to get an exemption for daughter. The trouble with no-BYOD is the kid must bring the school-controlled Chromebook home and connect to the home network for homework (which often requires Chromebook). Many US middle and high schools have an IT department of 1 or 2 people; it introduces abuse risk I think schools in general are not appreciating.
I see the problem with Chromebooks and cloud stuff more generally as being that it's difficult to see the productive use-case of programming outside just shuffling a bunch of data around. If your program's not actually doing something useful, it seems like it'd be difficult to imagine a career in it. -But if a kid can get a relay to trigger via button and then maybe via web interface and then maybe automate it, I think that opens the world of hacking up to them. You know, for $10, they can have a fully-solar (w/battery) thermometer or whatever they want -- the thermometer can feed a thermostat to energize a relay coil to start a heater or whatever.
-But I might be outlier, because in school we had robotics class a lot of kids were pumped for, but I was confused because we never did anything useful with them; it was more like an art class, except at least in art class we baked ashtrays for our parents. -But what am I supposed to do with a 5-watt robot that follows yellow tape?