If the students have Android devices, that is the recommended option. They can either connect wirelessly or via USB. On iOS, only the wifi option is supported at this time.
There is also an emulator that runs on Windows and macOS, although we are still waiting on Google to provide Apple Silicon support for newer Mac hardware.
The companion app is available as for beta testing at this time while we continue to work through Apple's App Store Review process. All teachers and students using Mobile CSP have access to the iOS version.
We haven't figured out how to do this yet. According to Apple, TestFlight isn't available on macOS and so (my interpretation) they won't allow this in the beta. Once we are approved for the App Store then the companion will be available on Apple Silicon. We've tried signing the IPA with a provisioning profile containing Mac devices but this hasn't worked.