<p>I really really wouldn’t worry about it. There is certainly an obvious reason as to why you checked the box that you checked. I don’t remember whether the common app asks for ‘race’ or ‘ethnicity’ but ethnically I would think that you could possibly be considered African American.
Furthermore, it is absolutely insane to think that you might be expelled. I think that the worst that would happen is that someone in admissions would be confused if they see your picture, but wouldn’t reject you purely on those grounds. They would probably assume you were part African American or they would contact you and ask. Once you are accepted, there is no way that you would be expelled. Admissions really doesn’t involve itself in your life whatsoever once you’re here and no one will have a clue what box you checked. Plus, can you imagine the headlines? “Stanford Expels North African Student for Being White.” </p>
<p>If you’re really concerned, you might as well write or call, just for the sake of your own mental health, but I really wouldn’t worry.</p>