Your employers will not scour over your college transcripts digging up whether or not you got an A in class or a B. The only thing they care about is that shiny degree on your wall. As far as I know, employers do not even care what GPA you had in school. Again, all that matters is if you have an Associate's Degree, a Bachelor's Degree, a Master's Degree, or a PhD. They don't care about the rest. The reason your classmates might be freaking out over a B might have more to do with their chances of getting into some other school or maybe they're just getting outside pressure from their parents like, "If you don't get straight A's we're kicking you out and won't pay for your college loans anymore." No, getting an A or B does not matter when it comes to how successful you are in the long run. Both my parents don't even have degrees, and they managed to go through life successfully.