Smithonian:

In the early years of the 20th century, the students in Bullitt County, Kentucky, were asked to clear a test that many full-fledged adults would likely be hard-pressed to pass today. The Bullitt County Geneaological Society has a copy of this exam, reproduced below–a mix of math and science and reading and writing and questions on oddly specific factoids-preserved in their museum in the county courthouse.
But just think for a moment: Did you know where Montenegro was when you were 12? Do you know now? (Hint: it’s just across the Adriatic Sea from Italy. You know where the Adriatic Sea is, right?)
Or what about this question, which the examiners of Bullitt County deemed necessary knowledge: “Through what waters would a vessel pass in going from England through the Suez Canal to Manila?” The Bullitt geneaological society has an answer sheet if you want to try the test, but really, this question is just a doozie: