ucla extra info

I got the UCLA extra information email, and they’re requesting my first semester grades. I got all A’s and one B in AP Calc. Would this harm my chances of getting in? I am also taking AP Stats, AP Gov, AP Lit, musicianship, and a college public health course which I got all A’s in. I think the reason why I got this email was because I briefly mentioned a big challenge in my family but didn’t really expand on it. I only have one B in a college biology course in my second semester junior year otherwise.