<p>umm I know someone who was asked to take a one year leave from stanford before attending because he had a C in one class and a B-/C+ in AP Chemistry. He can come back once he gets a B in Chemistry at a community college and a B in one other class.</p>
<p>I'm amusing a significant drop in academic performance would relate to the grades you made over the first three years of high school. If you made straight As then I would assume that Stanford would want you to maintain that for the most part, but I think getting B+s in some of your classes won't be that much of a problem. All of us who applied to Stanford have a sense of the amount of work we need to do to get a certain grade. High Bs should be fine I think.</p>
<p>I agree. And, if you have a decent reason you can fail and be fine. But it better be like "my grandmother who I'm very close to passed away." or "my mom's cancer passed out of remission." Not: "My teachers were really mean." or "my parents took me on a trip."</p>