I am a high school student in the San Francisco Bay Area. I was a junior at the time of this incident. After the Spirit Rally (which is a big cheering competition between the four classes before Homecoming) my friends and I were arguing about “how to win next year.” Someone jokingly suggested getting “Class of 1998” tattoo on our foreheads. At that point, a painfully slow girl said to us “That’s very stupid. What are you going to do next year when you are the Class of 1997 (the seniors were the Class of 1997 at the time). We thought that she was joking but we soon saw that she honestly thought that each senior class was assigned the graduation year “1997”. We couldn’t explain to her how each class kept their graduation year. I don’t think she understands how it all works to this day.