This is based off the US, as that is the only place I have experience from.
In the school district I live in, they give school devices to the students. This might seem innocent enough, but these devices are filled with spyware to grab any information they want.
I know they used to be able to look through the camera, and take screenshots of a device. This is a really scary thing because if you bring your device home, you now have a piece of spyware in your home that could either phone home or store all the information on the device and wait till it gets a connection to phone home.
The only way you could stop this from happening is if you use your own device, and the reason you will probably use a school-issued device is because you can't afford to spend $1,000 on your own school device.
Most of the things you will have to do at a school involve using a browser, as most programs can be used in the browser. They could easily just install Chromium and Xorg on an OpenBASED system on an old ThinkPad.
The reason schools use spyware is to make sure a student is on task, but destroying the privacy of children when they are not at school is not the way it should be done. If the grading system is really good, then if the student is going to be slacking off, then their grade should be tanking, and the school system should not care, in my opinion.
If there are laws in place to make sure that companies cannot track children under 13, how is putting spyware on their laptops not breaking that? Is it just because the government is doing it?