I'm currently a rising senior (will graduate in 2021), and I got a B this past semester in AP Calculus BC. (It's not a B+, either; just a B.) I intend to major in English and Political Science during college (most of my extracurriculars and activities are English/Poly-Sci oriented), and I got a 5 on the AP test for Calculus BC.
I'm trying to determine how much of an impact this B will have on my chances at gaining admission this school year (I'm currently hoping to gain admission into Tufts, Emory, and BU, with reach schools of Yale and Stanford). I've gotten straight As other than the above B, and my extracurriculars aren't terrible (I've gotten some national/international recognition, but haven't started a nonprofit org or anything), but I know that seeing a dip in the grades junior year, especially in a core class, isn't great in the eyes of AOs. Any insight on how much of an impact this B will have on my chances would be great; thanks so much in advance.