And also lessons that are not relevant to the real world of public relations, often taught by professors who haven't been active in the PR business for years, so I've been told.
Some years back, I was in discussion with a university about teaching a course in PR. I purchased a couple of PR teaching books to get an idea what I was expected to teach. Any resemblance to what was in those books and how the real world of PR operates was purely coincidental. I decided against applying for the position for the following semester. However, when I spoke to another head of communications at another university and he asked me what I would teach, I told him that I would teach real world PR, instead of text book PR, and he jumped at the idea. Unfortunately, as someone still working in real world public relations, we couldn't work out the hours.