high expectation and correct education methods are 2 different t

The difference between the children from affluent families and low income families lies in the parents expectations.
For example if a girl got a reception position, the low income family one might think that is enough because she has got a job like her parents; while the girl from an affluent family would think that she has to get a better job and take this one as a spring board, just like her parents. This is the result of expectation and following footsteps.
The statics shows that 60% of the children fall in the same income category as their parent.

Demoralising scolding only destroy children's confidence, that is why their behavior deteriorating.
Instead of thinking of how to do a good job, the child is working out how to deal with the abuse coming afterwards. The child's energy and intelligence are used elsewhere, that is why he becomes stupid.

Bring up a child is a huge task, all parents should learn not to destroy or distort their children.