It is what is wrong with society today. Society is reflected in education.
An education system was developed in England in the nineteenth century which was adopted by countries such as ours. (We had no choice, they still ruled us.) The system has not changed since, for the reasons on the sheet, but more because it keeps people in their classes and perpetuates the world of the rich. We can't change the system because the haves want to keep the rest down. The haves control.