I'm really sorry if this has been asked already - I tried to use the Search function, but that came up with too many responses to be useful.
I'm asking this in the Parents' Forum because I think you have the most experience on this issue.
Basically, I've gotten a 3.9 through a very competitive private prep school (2 Bs so far, no weighing). I'm also Top 10% in the class, and that won't change. This year, to be blunt, I'm getting rocked. I currently have 2 Bs that have very little chance of becoming As, and 2 As that are very likely to become Bs (these grades are discrete; there aren't A-s and B+s). Assuming I get 3 Bs first semester (which gives me a 3.57 with 7 AP/IB classes), will that affect my chances for schools such as Chicago/Penn/Columbia/Princeton?