Even if that's a goal, it doesn't seem to be the main one. Frankly, I've never heard a college admissions official say they look at race to determine leadership skills, even if they really do do that.
If they do that, then it's fine for them to do so, but that just doesn't seem to be the issue here. And to the best of my knowledge, it didn't seem to be the issue in the Bakke case either, which nevertheless got the Supreme Court's nod toward promoting "diversity".
It can certainly be read this way, but it's not obvious that this is so. Diversity creates an atmosphere that will most likely mirror the world in which these future leaders will be required to navigate. That in itself is enough of a justification for diversity, assuming their goal is to educate future leaders. Also, there is the fact that leaders of ethnic groups tend to be of that ethnic group, so maximizing some proportion of diversity is increasing that schools chance of educating a future leader.
Er, you changed the subject from determining which future leaders are accepted into college to educating future leaders after they've been accepted.
That's a whole another discussion which I wasn't intending to get into. All I will say is that the status quo seems to point toward the use of race as a way to fulfill affirmative action requirements, not as a means for determining aptitude.
You're owed exactly as much of a spot as anyone with the same qualifications as you, which is exactly equal to that of a Black or White kid with the same qualifications.