They are under the pressure to get good marks. If a child can not cope with this pressure, this child is treated as a problem child. Children future tend to be decided by their school grades. Then, children are forced to join rat race by their parents who worry their future. In order to win this race, they have to memorize tons of knowledge in many fields of study.
Enormous pressure is on both children and teachers.
Teachers try to control everything at school to improve efficiency. One tragedy was happened as an aftermath of this situation. A teacher closed a school gate so hard that a student was crushed to die. The teacher watched students at the gate to decrease the number of students who are late. This education of competition and control oppress children so much that children can not rely on adults and get inferiority complex.