Advantages for the Wealthy?
I would really question that wealthy students have an automatic advantage in college admissions for the same reasons as prep school kids. Colleges are seeking first-generation and underrepresented minorities, and that means that wealthy applicants still need to prove themselves. I do work with some wealthy families, and they receive the same advice as any students: challenge yourself to the max in high school and show colleges that you are ready for their demanding courses. That is not to say that wealthy students aren't sometimes well connected with certain colleges - they can be - but colleges know what they're dealing with.