This is one of those things that you don't think happens in the real world...but it did.
At Jackson Central-Merry High School in Tennessee, a teacher showed Human Centipede 2 to a classroom full of high school students. A parent reported the incident to The Jackson Sun. No surprises here—the teacher was suspended and the school has launched an investigation.
If you're not familiar, the Human Centipede is a horror film franchise that's so graphic, it's previously been banned in the UK, Australia and New Zealand. We'll spare you the details, but if you're really curious, check out the synopsis here.
We can't imagine what coursework Human Centipede could have possibly supplemented. Biology? Anatomy? Let us know what you think in the comments.