短文改错 急

短文改错 急
It is reported that in some middle schools teachers required to take the final exams together with their students,which cause a heated discussion among people.
People had different opinion on this.Some people are support this practice.They believe the exams will encourage teachers to keep learn and the teachers can improve them too.What's more,teachers should set good examples to their students on different ways.
However,the others say no to this practice.They think,for one thing,the teacher's job is to teach knowledge to students,not to take exams.For other,the ability to deal with exams isn't equal to teaching ability.
In my opinion,the most important thing for a teacher is to devote his/her time and energy to