Which means that exams need to be much more difficult. When I was a grad student Teaching Assistant at Harvard we had a newly hired professor who'd spent the last decade at Cal Berkley. He decided to give the same midterm exam he'd given many times before at Berkeley. When we TA's saw the exam we politely told him he needed to change it or the whole class would ace it. "Nonsense!" he said, "Harvard students aren't that much smarter than Berkeley students." We had to write and administer a second midterm because everyone scored 98, 99, or 100 on his Berkeley test.