Give it a couple years… and then a few more.

Just spitballing an idea. Along the lines of airdrop, does the instructor have a machine that the kids can send their music to when they’re done? This would create a backup, which the instructor could then organize and upload to a server (google drive?) that can be shared with the iPads as read only, so the kids could redownload the file again if need be.

There’s a lot of references to this, but it looks like there’s not a known source. Interestingly, the first reference to this tablet was from 1908. https://quoteinvestigator.com/2012/10/22/world-end/