Limit editability of course after term end

[rwollner]

We would like concluded courses to be preserved as an archive. I thought that courses automatically enter a "read only" state to faculty and students after the conclusion of a term. However, I have found out that faculty are able to delete material from a course after its conclusion.

Is there a way to prevent any changes from happening within a concluded course but still leave the course available to students to view and faculty to view and copy?

Thanks!