I’m the only person I know who got a 1 on an AP exam. See, my senior year of high school, I took a physics course, and signed up for the AP exam. The Physics AP is broken up into two tests (for the price of one!) Mechanical, and Electricity/Magnetism. All year, all I was taught was mechanical physics, but I decided to try my luck on the E/M section. Was completely lost, so I ended up writing snarky answers for the short-answer section. Got the lowest grade possible, but I hope I put a smile on the face of some grader. 
Also, I don’t know if this counts, but I took some dumb standardized test in elementary school that asked the following question.
“Estimate the answer: 2x2x2x2x2x2x2x2=?
a) 8
b) 16
c) 256
d) 400”
Or some such thing. Being the dork I am, I had memorized my powers of 2 for kicks and the answer immediately popped into my head! 256! I answered it accordingly, and got it wrong. See, I was supposed to estimate the answer to the problem, not actually solve it. :rolleyes: (I think they wanted 400. 2x2x2=8, rounded to 10, and such.)
Also, in elementary school, I got the following question on a basic science test:
“The sun rises in the ______.
a) North
b) South
c) East
d) West
e) None of the above”
Yeah, I answered ‘e.’ Because, you see, the sun doesn’t rise. It doesn’t go anywhere. It’s the earth that rotates that gives the illusion of the sun rising. Got that one wrong too.
Then there was the “reading comprehension” part of some standardized test (again in elementary school) with an essay talking about the Sahara desert, claiming that it’s the “largest desert in the world.” Which is most assuredly wrong, because Antarctica is bigger, and it’s also a desert. IIRC, there’s a big swath of some ocean that also gets very little rainfall and is even bigger. But I don’t know if swaths of ocean can count as deserts. I complained to my teacher that the test was inaccurate. She told me to sit down and finish the test.