Why do teachers discriminate against poor test scores?

A big mistake that teachers often make is that isolation is not pleasing to the eye. For example, a person's exam results are poor and he often fails. Some teachers often name it as lowering the class average, and can't help but arouse other students' contempt for him. It often makes one student make a mistake and makes the whole class suffer. Some teachers' subconscious purpose is to exclude students with poor grades from other students with unsound minds. If not, it's meaningless. China has a concept that has been wrong for decades. "All-round development students".

But when I was at school, this kind of discrimination against real talent and learning was very serious. For example, I am good at math, physics, Chinese and English, and I get zero points in music, sports and computer. I can't even turn on my computer. I am still an excellent student. However, if my music, physical education and computer are terrible, and I speak Portuguese like my mother tongue, but I fail in math, English and chemistry, then I am also a poor student. In fact, I think in the all-round development, all kinds of disciplines can only be regarded as one. At best, it is academic ability, at worst, it is exam ability. You can't call a person an all-round development just because he did well in the exam.

I think they are pathetic. A few years later, I took part in the work. I can only envy my colleagues, because they have their own specialties. I was respected by my classmates and praised by my teachers. Who can boast that I am a good student with all-round development? Now, I can tell others: What are you? You have the courage to compete with me in the exam. Perhaps slowly, the difference between the top students and the poor students in that year lies in everything they learned in that year. Top students know that carbon dioxide turns into dry ice at MINUS XX degrees, while poor students only remember that it is MINUS several hundred degrees.