My father has taught college math since before I was born, and every Summer he has an an anxiety dream about the upcoming school year.
A favorite of mine is the 'Fish One' dream - a simple and straightforward anxiety dream as ever was dreamt. Dad goes into school, is told he's teaching a new class - about which he has no concept - called Fish One, given the syllabus, and dropped into the classroom. The classroom has an unfortunate design, in that the first ten rows lead straight out in front of the stage, but then the room takes a 90º turn and the last 100 or so rows are completely obscured from the podium.
I suspect that the secrets of the universe are in that dream somewhere.