So now I direct people who ask me what this grad student business is to the essay, which has been on my private course sites for a long time but which I've finally decided to make public.
Note: if you have feedback, I'd love to hear it, especially if you're an undergrad (two of my former students read "How Universities Work" and said it made sense; the changes that resulted were relatively minor). If you want to send msgs privately, try seligerj [[at]] gmail --dot-- com.