when i was a diploma holder, i got an A grade in my first year.

A lot of people say its impossible, but the impossible does happen.

I was then told to tell my peers that I got C grade, because a lot of people more senior than me will be given C grade.

But then again, it is obvious that long term diploma holders in CS are already entrenched, at best average performers, and will not be given higher than B grade unless they are due for promotion.