<p>I was the only person from my school accepted to yale and <em>gasp</em> there was more than one B on my transcript. What I’m trying to say is that one B will NOT be the reason you are not accepted. As others have said, they look at the ENTIRE picture. It’s good that you do care so much about your grades though and are trying to keep them high. The B won’t kill you, just do your best to raise it if possible. If not, just try not to make it fall.</p>