Cmv:high expectations undermine actual achievement:
I don't want this to come across as a humblebrag, but I am studying at university and get good grades. I have achieved mostly First Class grades this semester while my friends get 2:1s and 2:2s. 

It has become an expectation that I achieve Firsts, and therefore when I do score highly on work I receive replies such as "of course" or "is that it?" jokingly from my peers. 

I am not trying to be arrogant, but I can't talk to this with any one of the guys on the course. They feel like I should be 'grateful' for my grades, despite the fact I put substantially more planning and writing time into the work I submit. In the past I have usually had a peer to compete with, but I am lacking that and I feel it puts pressure on me to just keep at the top.

I am I just being a dick or am I justified in feeling that my achievements are undermined by people expecting that I get top grades?