Its just unfair

Some time its really unfair,teacher always like student who can get high goal during exam. But neglect what's thinking of other student. As parents we also hope our child can study very well and get the favor from school~

One cannot say all the time teachers are wrong. But then teachers also go wrong as much as students. Most teachers have a ego that all students should behave obedient to them. In the present day circumstances where children know their rights, they tend to be more free than what the children were some 15 years ago. Therefore, the incident of sending the students to office for investigation. This happens as you said when the teacher is more stupid. She can capture all the students' attention with good teaching, interesting way of teaching. They lack that.