API scores and how ethnicity and neighborhood dynamics affects them is relevant to real estate. Anything related to ethnicity is bound to offend somebody. I think that many people are far too touchy and unable to discuss the issue with sense and without emotion. Truth is truth whether it is palatable or not (this should not be construed as support for any statements made by other posters).
A perfect example of PC censorship is the instance where the President of Harvard made comments to the effect that the innate differences between the brains of men and women could explain why there are fewer female scientists. He was heavily criticized for this statement, despite the fact that study after study have shown that the brains of men and women are different. Different does not mean better or worse. I was appalled that a scientific statement by an educator was excoriated. Political correctness, where it demands that truth be ignored, is revolting.