No, it gives an advantage to someone who is equally talented a bump up over someone who has the advantages in place. The Supreme Court has allowed admission policies that use diversity as a factor in a holistic approach to admission.
For instance. Some schools use a point system for admission. Out of 100 points, 5 point may be used for a person who comes from a different group than the majority of students. For instance, Veterinary Schools have been predominantly women for over a decade. They now give diversity points to males and especially males than come from rural backgrounds since there is a need for rural doctors. Same with law schools who need rural attorneys.
The assumption you are making is that NO black person can ever make admission because they are inferior. There may be other factors at play. Poverty is one. You can't study all the time if you have to get a part time job just to eat. Because of that, schools tend to cut some slack on those students in their admission process because its not that they are dumb, but because they have extenuating circumstances that inhibits their ability to do the absolute best they can.
Individuals aren't equal in ability, nor are groups on average, that is just a fantastical notion on your part. If groups were equal in ability on average, there wouldn't exist these large disparities in test scores and IQ. This isn't an issue of "advantages", this is an issue of engrained biological differences between the races. Obviously intelligence isn't purely heritable and can be affected by variation in environmental factors. No one ever said all blacks are of low intelligence. You are dishonest saying that. What we are talking about is averages. However, the blank slate ideology of liberal left is naive and anti-science. Heritability of intelligence varies in studies from a factor of 0.5 to 0.8.
Heritability of IQ - Wikipedia the free encyclopedia
If these large disparities between races were due to "advantages" from Whites on average coming from higher income backgrounds, than we wouldn't see for example lower income whites outscore higher income blacks on the SAT.
Achievement gap in the United States - Wikipedia the free encyclopedia
If they were due purely to environmental factors, like differences in upbringing, than you wouldn't see the same differences in IQ between the races persist when blacks and whites, when they are both adopted at birth by upper middle class whites families, as shown by the Minnesota Transracial Adoption Study.
http://www.kjplanet.com/amp-31-10-726.pdf
The reality is, the group that is harmed most by Affirmative Action policies is not rich whites, but generally poor whites from rural areas who tend to be more conservative.
Affirmative Action in Higher Education Ron Unz Farron and others Occam s Razor
I don't really care what your Supreme Court says on the matter(rulings change all the time). It is a discriminatory policy in stark contrast with biological reality which harms the most economically vulnerable of the white population the most, making them second class citizens in the country their forefathers founded. The policy is inexcusable in both moral and practical terms.