Granted. The top hires from the top. This leads to two questions:
At good schools nearly everyone graduates in four years, but at lower level schools lots of students don't finish at all or take more than 4 years in part because they fail (or never finish the work) in classes. Given the importance of getting a degree, and the cost of taking more than 4 years to do so, grading is also important for students "at the bottom" of the college world.
Another month, another rationality quotes thread. The rules are: