To be honest i have similar stories.
One from primary school when a friend of mine was asked to point out America on the map, by the teacher, and he did not notice that the map that was pulled down was a map of Slovenia. The teacher did not know if she should laugh or cry.
And one from high school where i snuck in to a neighboring school a 3 year long high school for those that want to work at a counter in a store or something similar. To my countries defense almost the whole class was made of immigrants. They where asked to point out Africa on the world map one by one came up and did not know and got a 1 (F) then one raised his hand went up used one finger to point to somewhere near the Kongo (usually you have to drag your hand trough the whole continent) and the whole class cried out Piflar (nerd).