I doubt that the school IT people would attempt to fix it. That's a different job. I haven't heard a school IT person even attempts to replace a laptop battery. Any attempt fixing it has a good amount of risk of breaking the laptops. Hence, they school would have to outsource or rely on a 3rd party to fix and the cost would become even higher.

Yes, and that it could help inquisitive students? I know in the old days nerdy kids would do teardowns before we even had YouTube. I would assume kids these days still do it.