[danShumway]

As someone who went to college and regularly saw professors checking out textbooks from the college library and photocopying questions/articles to distribute to their classes, the physical model doesn't seem like it actually offers many protections here.

[paulryanrogers]

IIRC fair use may cover that if it's only small portions of a work or significantly transformative, and not for profit. There was also an exemption from the DMCA for educators in recent years that may be relevant.