I think that is a feature of AP Exams, not a bug.<p>How would design a uniform final exam for all, say, Calculus I courses? Sure, you can only test the intersection of all, but that encourages the teachers to only teach that subset. Instead, AP exams test the union of all, and normalize the score so that you only need, I think, a raw score of 60&#x2F;100 to get a 5 on calculus. That way, teachers are encouraged to experiment with their curriculum, and students are not overwhelmed by the need to know everything there is to know. It&#x27;s really a win-win solution.