The first thing is to confirm with the child why the child is criticized by the teacher, because he did something wrong or because of other reasons. Find out the ins and outs of the matter, I believe that every teacher is responsible and he will not be biased against any child. Since the child has been criticized, he must have made some mistakes.
Secondly, we need to know something from the teacher. It is not excluded that some children like to lie or say things that are not things. We need to know the reason for being criticized from the teacher. I have a more reasonable analysis and judgment. I think parents should have a fair and just attitude first, and they should not be selfish on purpose or cover up their children. Of course, if the teacher doesn't handle it properly, we should also stand up and ask for advice for the children.
If a child is really criticized for doing something wrong, as parents, we should correct the child's mistakes in time, help the child correct his own shortcomings, cooperate with the school to let the child develop good study and life habits, and try to avoid making similar mistakes in the future.
At the same time, we should make some promises with teachers and communicate with them more to prevent children from making similar mistakes again.
When we criticize children, we should also take care of their self-esteem and pay attention to our own methods. Don't be too violent, and avoid the important. The only purpose is to prevent children from making similar mistakes in the future.