Observance = Cleverness = 'Ah ha'

Decades ago I had a teacher who passed out a quiz to each of the students telling us it was to test our ability to follow instruction. At the top of the page were the instructions to read through the test before beginning. One of the first items said to stand up and twirl three times. Another required the test taker to call out their favorite color. You get the idea. It was a noisy quiz. At the bottom of the page it said something like this: Now that you have read through this quiz sign your name here and turn this paper into the instructor. I was one of the few who completed this task correctly. What did I do differently than the other students?