And that wasn't flame. Are they just in worse school districts in general or something? Less family educational history? Idk. Not flame though.
Here's the short version:
URMs score lower on standardized tests than the majority (white) population for a host of social, economic and psychological reasons. The combination of reasons will vary according to which group you're talking about and at what level of standardized testing.
At the level of the LSAT, and for URMs with a good GPA, the single largest problem seems to be that, aware of societal stereotypes that blacks don't do well on it, their test-taking strategy (being extra-careful, second-guessing answers that seem "too simple", etc) reflects both their desire to perform well and their fear that they may "let the side down" and confirm societal stereotypes.
This effect is subconscious pervasive, especially
among URMs who are bright and accomplished.
The phenomenon itself (it is called "stereotype threat" by psychologists) is not just a URM thing: it depends on the context. For example:
Tell a group of white students who are great at math that you're giving them a test to figure out why Asians are better at math, and the white students will do worse, much
worse, on that test than if you hadn't said anything. And here's the kicker -- they're not even aware of why they've bombed the test.
In our society, if we're honest, blacks and Mexicans and such are seen as less bright than whites and Asians. Because of this, on tests such as the LSAT, IQ, SAT and so on, the stereotype threat affects them most, and whites least.
I hope that's a little bit clear