This is an interesting issue. And I hope someone more knowledgeable can help me but students notes are almost always plain copies of the teachers notes for whic

This is an interesting issue. And I hope someone more knowledgeable can help me but students notes are almost always plain copies of the teachers notes for which the teacher and school probably hold copyright. I think that while it sucks for the students, the school might have a good reason of wanting to protect the work teacher have put in these notes. On the other hand, the students buying these note are probably also in the class and if they had taken been to class they would have had the notes available to them. I guess it boils down to the fact that money is exchange. Sharing notes with a friend for free probably can't be stopped.