Why anyone is surprised? Parents are the most powerful role models for children, especially at early age. Also they have good opportunity to teach they kids an

Why anyone is surprised? Parents are the most powerful role models for children, especially at early age. Also they have good opportunity to teach they kids and what they will teach depends on what they know. This limits social mobility, but all proposals to fix this so far IMHO will do more harm (to high acheivers) than good (to under achievers). This is a difficult problem to tackle so I don't expect easy solutions to work here.