I think your fair use argument is reasonable. Interestingly fair use for sheet music (as one example) in an educational context is far more limited than you mig

I think your fair use argument is reasonable. Interestingly fair use for sheet music (as one example) in an educational context is far more limited than you might think [1]. There are a number of limited exceptions for sharing copyrighted materials with a student but all of them would involve transforming the sheet music by only sharing part of it. In this scenario this would change the hash of the file and the file blacklist wouldn't pick it up. [1] http://copyright.lib.utexas.edu/musguid.html http://copyright.lib.utexas.edu/musguid.html