If we are assuming manufacturer cooperation in designing and implementing "School Mode" for their devices maybe make is so as part of parental controls the pare

If we are assuming manufacturer cooperation in designing and implementing "School Mode" for their devices maybe make is so as part of parental controls the parents can enroll a device with their kid's school. A device that has been so enrolled would detect when it is at school, maybe by looking for a particular Bluetooth beacon that the school deploys. When the device determines that it is at school, it would connect to the school's wifi network authenticated and secured with a certificate generated for the device when it was enrolled. It could then use a provisioning server on that network to find out what usage is allowed or not allowed while at school. Such a system could allow for pretty fine grained control. For example the article mentions that one thing kids use their phones for is taking photos of notes on the board. With a School Mode that works as describe above they could make it so the teacher can use their phone or tablet near the end of class to grant temporary camera permission to all the enrolled phones in that classroom.