Sounds like you need to familiarise yourself with PowerShell and Group Policy.

Vbox will create a bridge with my wifi card (I’m a laptop user with no option for a wired nic in the host).

I’ve never been able to get kvm to do that and haven’t found any working instructions online that a simpleton like me can follow

So what is your suggestion for a viable alternative that auditors will also accept?

I don’t have a better answer for OP, but telling them to switch distros is also not answering their question at all.

I would highly recommend against installing a pirated version of Windows like BearOfATime suggests (at least via the second link he provided) - it could cause trouble for both you and your school.