When I first started reading this it totally reminded me about this short story I had to study in English called Examination Day by Henry Slesar. I had the feeling as soon as I started reading it that it would be something similar, but I really enjoyed it.
He began to wonder why he had felt uneasy at all. It was like a man wondering in broad daylight why a dream had appeared so terrible to him at night. — Chinua Achebe, Things Fall Apart