Dana Goldstein has found an amazing fact which, if middle class parents believed it was representative, would make the world (and in particular the USA) a much better place
So were the litigious Fairfax parents correct to freak out about South Lakes? Let's look at the numbers.
At South Lakes High, 46 percent of students are white, 20 percent are black, 16 percent are Hispanic, and 11 percent are Asian. One-third of the school's population qualifies for free or reduced-price lunch. In other words, this is both a racially and socioeconomically diverse school. How does this affect the most academically talented/privileged proportion of the student body? Well, more than half of white kids and almost half of Asian kids participate in the IB program, as do about 20 percent of blacks and Hispanics. An overwhelming majority of all the students enrolled in IB score a 4 or better, indicating excellent instruction and achievement. As for the SAT, the average combined score for white kids at South Lakes is 1730 out of 2400.
Now let's look at Oakton High School, which affluent parents sued to get their kids into. Oakton is 67 percent white and only 11 percent black and Hispanic. Less than 9 percent of students there qualify for free or reduced-price lunch. Oakton has an AP program in which white students are just as successful as their similar white peers at South Lakes are on the IB exams; of the black students participating in AP though, less than half scored three or higher. Tellingly, on the SAT, Oakton's white kids score 1734, essentially the exact same score as white students at South Lakes.
My point: The educational outcomes of privileged kids are remarkably similar across schools with similar curricula, while it is the least advantaged students who show more differentials. When parents are considering where to send their kids to school, they should look at the relevant numbers.
via Ezra Klein.
Sad to say, the whole world isn't Fairfax county (well that would be a very boring world, ethnicly diverse but culturally a bit focused on US politics). In most developed countries, average educational attainment of mothers of students is positively partially correlated (positive significant regression coefficient) with individual student performance (on the PISA test) even if the educational attainment of the student's parents is included in the regression.
see this (mainly for the references)