Del pretty much confirmed the application process already discussed on this thread. Three people read the application and score it from 1-7. The scores are averaged. In the case of a large discrepancy between markers, a fourth person reads it. Anything from 5.5/7 + was accepted this year.

He also spoke about how the admissions essay is a bit of a lottery system, like medical school autobiographical sketches. Basically he said that marking essays is very subjective. He gave the bhsc faculty a sample essay to grade and the marks varied from A-F. Even when provided with a rubric, the marks still varied drastically. The point is that, as mentioned many times here, there is a component of luck in the admissions.