Yes, what you did is wrong to the child.
I'm a doctor. I had studied psychology in University.
I advise you not put pressure on your kid right now and if he cannot catch up, find a BETTER school which is more suitable to your son. Remember, it is NOT your kid's fault. It is your fault. Otherwise, you never know what your kid will turn up both in term of psychology and behaviour.
Finally, I am serious !
now,he is fine.
we had a little talk few days after.
he told me that the reason that he is not happy was
his father's speech not the course.
yes , indeed his father did mad and call him stupid tnhat night.
but , l will keep him in view for his work.
thanks.