The first table cites the pass ratios for all low-income students at 37.3%, 28.3%, and 26.4% for 4th, 7th, and 10th grade respectively -- the pass rates for black children are lower than that. So one can accurately infer that non-black low-income children perform better.<p>Granted, this isn't as informative as breaking things down by both race and income. But, as far as I can tell, this is a limitation of the state's reporting data and not a selective argument made by the blog.<p>See <a href="http://reportcard.ospi.k12.wa.us" rel="nofollow">http://reportcard.ospi.k12.wa.us</a>