Oh wow…just found this…
https://edx.readthedocs.io/projects/open-edx-building-and-running-a-course/en/latest/exercises_tools/randomized_content_blocks.html#enable-content-libraries
Are you telling me the point of Libraries is not to share common material between classes, but only to share common quiz questions? So basically if I want to use this for inter-class common material, I need to create Libraries with one piece of content per Library and then select a “randomized” content block which is picking from 1 of 1 pieces of content?
Is there some better way to share materials between classes and between instructors? This will kind of work, but it’s also kind of janky!