Do not modern descendants of displaced Native Americans and the descendants of enslaved Africans also benefit from the same institutions?
Bullgrit
Sure we do, but not in quite the same way. Not to the same degree.
http://whatever.scalzi.com/2012/05/15/straight-white-male-the-lowest-difficulty-setting-there-is/
Just one example: college admissions boards take into account all kinds of factors when choosing who to offer a slot to. One thing they're doing is offering a certain number of slots to minority students. They do this because of "diversity"/affirmative action concerns. This makes some white people think they're getting shafted. Some have even sued over it. My law school, University of Texas, has been targeted multiple times for this, and is currently involved in one right now that may reach the SCOTUS.
But consider: one of the factors in admissions is "legacy". "Legacy" means you get a higher priority to admission in a given college because an ancestor went to that institution. You know who most of those ancestors for legacies are? Whites...usually guys. Racial minorities (and in some cases, women) were forbidden from attending many of those institutions, either by force of law (in the South) or by school charter (everywhere else). As a result, blacks, hispanics, etc., will be statistically far less likely to be granted a "legacy" consideration almost everywhere except at colleges founded by & for minorities.
IOW, as long as "legacy" is a factor, whites will have a statistical advantage on college admissions almost nationwide.
Take it down a couple levels to public school funding. In many areas, schools are primarily funded by property taxes gathered in the area the school serves. This is great if you live in a wealthy neighborhood, and absolutely sucks if you love in a poor one. To rectify this, some states do reallocate some funds from wealthier districts to poorer ones. Guess what: the people in the richer districts often cry foul. Demographics tell us that the poorer districts overwhelmingly tend to be populated by minorities, while wealthier ones tend to be whiter.
While there is no direct correlation between school funding and post-graduate student performance, some deleterious effects of underfunding are obvious: student aid services are less available, up-to-date learning tools are less available. Hell- things like temperature regulation, leak and mold control that well-funded schools take for granted may be completely absent in poorer districts.