Every year in Korea, high school students hoping to attend college take the College Scholastic Ability Test (CSAT), a day-long affair for which many students begin preparing since kindergarten. The CSAT is given just one day per year (which just happened to be yesterday), so this particular day is treated almost like a solemn holiday in Korea. Stores are closed, traffic slows down, and flights are even delayed to lessen the noise (lest it distract the test takers). Parents line up on the streets to cheer on their children taking the test: image source Why is the CSAT such a big deal? Well, it can not only determine what university a student will attend, but it is the gateway to future job prospects,...