This seems paranoid. The kids are all surely already using Google for everything else. Tor and Tails would not only be an immense hassle for them which would ma

This seems paranoid. The kids are all surely already using Google for everything else. Tor and Tails would not only be an immense hassle for them which would make it much harder to get anything done, or use most school-relevant software, it also doesn't even help prevent any tracking in this case. If a service requires you signing up for an account with your real name, then that's all they need right there, because then they can just tie everything you do to your name. Using Tor in this scenario really makes no sense, unless you plan to have them all use fake names, a fake school name, redacted/altered school material, etc. And if you don't want to use Google, the privacy policy for that other service seems totally normal and fine. Respectfully, I think you may want to have your school consult with a technologist, rather than trying to give them software guidance based on your own understanding of the issues.