While talking about a paper I was writing for an English class in college, someone from my dorm floor asked me, "What's the grading scale in that class?" I said the grading ranges were standard ones--90-100% for an A, 80-89% for a B, etc.
"Ah, the humanities," he replied. "Where an A is actually an A, and a B is actually a B..."
He then explained how a passing grade in many of his classes could fall well below the standard 60%; sometimes, it might be 40 or even 30%.
That's not what you want to hear from an aspiring physician.
