My favorite line from the piece you cited was this, "The study also found Hispanic immigrant children do as well as Asian children, provided they have similar socio-economic and family backgrounds." I would love to be able to wave a magic wand and provide all kids with equal financial resources; stable, stress-free and functioning households, healthy foods and schedules, language-, book-, and experience-rich environments, etc., but until that happens, the best we can do is ensure all schools have books, libraries, arts, sciences, quality teachers, counselors, health professionals, recess, etc, to try to give all kids the best shot at a good life.