In Time Lev Grossman writes:

Every year on the first Saturday in December, twenty-five hundred of the most brilliant college students in North America take what may be the hardest math test in the world—the Putnam Competition. How tough is it? Although there are only twelve questions, the test lasts six hours. And although these are the best and brainiest young minds our country has to offer, the median score on last year's test was one point. Out of a possible 120.

There's an even tougher and higher standard: God's holiness.