Man, I *still* have nightmares about not really being done with school. Like...I have nightmares that apparently I didn't actually graduate high school, so every credit to my college degree was invalid, and so not only do I have to repeat one semester of high school for some reason, I also have to repeat *all* of college.
I also have the occasional nightmare about 'just' not having finished college. In both nightmares I get fired for misrepresenting myself on my resume so really that's nightmarish enough.