New posts in Self Plagiarism

In what situations would "self-plagiarism" be authorized by a professor?

Re-using a paper from one class for another?

Report blatant self-plagiarism to journal editor or PubPeer?

Is reusing old code for a new assignment considered self plagiarism? How to protect yourself if you consider it to be, and a group partner does not?

How to deal with repeated resubmissions of a bad paper (as a reviewer)?

Is it considered plagiarism if I use my OWN answers twice

Is it self-plagiarism to reuse my own unpublished material?

Is it inappropriate for an author to copy and paste from his/her original paper in an extension paper?

Overlapping sentences in methodology descriptions in separate journal articles - plagiarism?

Is it problematic to use a Wikipedia article I wrote in my PhD thesis?