Originally Posted by Unregistered

There is a very simple reason for this.

The metric by which UK universities accept students for undergrad courses is by assessing whether the student will be able to get a 2:1 at the end of his course. The ones who get a 2:2 are students who were assessed to be capable of getting a 2:1, but for some reason, did not. It this stands to reason that they have a higher rate of 2:1 and 1st class graduates.