@boomerang,
You are better informed on this subject in the contemporary environment than i am. I read extensively about the issue of standardized testing in the 1970s. I can't give links, because there was no interweb in those days. But from reading links you have provided, it appears that many of the same problems remain.
A student raised in a home in which they are required to speak "grammatically correct" English, in which they will be encouraged to read
Robinson Crusoe and
Huckleberry Finn, in which they will have heard of Plato and Picasso will always be identified by standardized testing as superior in the subject matter which will qualify them for an honors English course. This is no measure of intelligence. Familiarity with the Western Canon and the giants of philosophy, art and literature in Western civlization will not help them with math or science--but it will get them into an honors English or literature course.
The child of a minority family who is not expected to speak "the Queen's English," who isn't taken down to the library to read James Fennimore Cooper and Charles Dickens, who doesn't know who Matisse and Mozart are can be just as intelligent--but won't qualify for the honors course on the basis of standardized testing.
I am not surprised to read the sarcastic comments of those who would defend the bastions of the white, Protestant ascendancy.