If the child is always active in class, does not converge after being reminded, likes to draw pictures that he can't understand alone, has a bad temper and behaves strangely, take the child to the hospital to see if there is any disease.

If it is only poor grades and the children have no other special performance, there is no need to have an examination, because some children have been learning slowly in the learning process and need the patience of teachers. Of course, parents also play an indispensable role, that is, creating a more favorable learning environment for children, or explaining homework to children and doing more extracurricular tutoring.