zwei2stein writes: I found this question with far reaching implications in offtopic section of one forum: My economics teacher is forcing us to give up all of our work for the semester. Every page of notes, and paper must be turned over to her to be destroyed to prevent future students from copying it. My binder was in my backpack, and she went into my backpack, and took my binder. Is that legal? Besides of issue with private property invasion which was trigger of that post, there is much more important question: Can teacher ask student not to retain knowledge? Can school command pupils to become ignorant once again? How does IP law relate to teaching? Whose property are those notes?