I got several 85%s in single modules but on my course you got a level which was tied to a specific % i.e. low 1st 75%, mid 1st 85% and high 1st 95% and nothing in between, I only saw one 95% given out in 3 years so that made averaging 85% virtually impossible... I think I got the second highest average on my course and got like 74.5% average, the highest was like 75%... think an 85% average would be possible on a maths course or sometimes where you can get 100% if you get all the answers but in an essay based subject you'll never be getting perfect marks so that then means you can't make a single mistake!