Not sure what you’re trying to say here. Historically minority groups (specifically black and Hispanic) have been underrepresented in higher education. Affirmative action was supposed to help make higher education racially represent the population at large. Many minority groups are disadvantaged from a young age in terms of education in the USA so collecting data on race of applicants was supposed to help normalize people’s racial background. If I grew up in a predominantly well funded schools my exam scores will likely be higher than a student who grew up in a poor school district. The effects of segregation, racism, and xenophobia in the USA have led to a racial divide between many local school districts in the USA. The whites who have historocally had more money have better funded schools. Without knowing where someone came from it is harder to judge how good their respective scores are. Odviously there are still ways to do this but the supreme court removed a legally required one.