The problem is that schools and teachers are at risk from more liability than ever. If a student is groomed online whilst using a school device of login, who do

The problem is that schools and teachers are at risk from more liability than ever. If a student is groomed online whilst using a school device of login, who do you think is going to get blamed; not the parents but the school. If a child is bullied online or radicalised, then again is will fall back on the school. You can't have privacy and expect a school to be responsible for what a child does online. Privacy doesn't create a safe environment; and when it comes to crappy adults, out of any group of people parents are the by far the most likely to abuse or neglect children. This idea of "stranger danger" is a myth, as the real danger in most cases is closer to home.