[der_ketzer]

When I was in Germany, a group of students (who wanted to do it) were given the task to take notes in latex. Then every week they compiled the pdf and was put on the website of the faculty.

To write the latex file, they worked together (sharing the same file, same idea as google docs).

And at the end, they put the effort only because they thought it was nice to have all the notes in pdf, commitment with the class, and because it was a good idea to share it with the other students. I still have all my mathematic classes pdf's.

[denzil_correa]

I believe this is commonly called "scribing". A lot of professors over the world follow the same for their courses.