Many adults dream of sitting an exam they have not revised for, long after leaving school. The setting varies; the feeling does not: you are expected to perform and you are not ready.
Readers generally treat the exam as a stand-in for any situation where you feel judged. Taking an exam and being unprepared for an exam are among the most commonly reported examples. There is no firm evidence that the dream predicts anything. It more often appears around real pressure, such as a review, a launch or a move.
Details to note: do you know the subject, can you read the questions, are you out of time? A dream where the paper is blank asks something different from one where you know the answers but cannot write.
It can help to notice what in your week resembles the exam, and to do one small thing about it. For some people that is enough to quiet the dream.
Related reading: being late and recurring dreams.
This guide is general information, not medical advice. If dreams or sleep are affecting your health, speak to a doctor.