How do they do that?

I just got of the phone with a statistics professor at the main campus. I called about the prerequisites for a class that I want to take. I’m pretty sure I’m way too stupid for the class, but after talking for 5 min to this man who has never met me, I suspect that I may be the most brilliant statistician alive. How, and why, do they do that to me? Oh well. Looks like I'll be driving 2 hours to class 3 days a week.