How education could have poor quality?

When i face someone talking about high quality or low quality education, I always feel awkward ¿How the education can be good or bad if is a need of the societies educates their new generations? When I thought it that way I realize that the existence of poor quality education is a social product more than the good quality education is. I mean, the obligation of education and the insufficient resources that the governments intend to the schools where the child of the poor and the working class goes, produces the poor quality education. Is not that some schools or some teachers do a good job and others don’t, is the conditions gave to the educational institutions to work that explains more the results. Its teachers salaries, quantity of students in a classroom, the infrastructure and the equipment, the proportion of hours that teachers dedicate to prepare and do classes, the support of non-teachers professionals like psychologists, education experts, social workers, and other technical support.

The existence of poor quality education is because education is not a real priority, just a minimal obligatory education is needed.

Well, the conditions of a good education are the first matter, but how we understand quality in education is another fundamental matter.

In Chile, the quality of the education is measured by the SIMCE test, that is about language and mathematical knowledge. This is the only thing that the government measures to evaluate the quality in primary and secondary education. At the end of secondary education, the students do the PSU test, which is about language, mathematical, history and social sciences, and natural sciences knowledge. The thing that this two tests have in common is that they are only multiple choice questions tests, this means they understand quality by doing standardized  multiple choice questions in about two hours of the students whole education. I think this is a very limited way of understand the quality and what the education must be.

To me, the education is about trespass the culture and the knowledge of the society to a new generation, so must be integral and at the highest level. Education is also about solving personal and social problems, because is about teach how to live individually and social way, so the education must start from real problems of the students social environment, and the path to solve it, where scientific, social and technical knowledge is needed, has to be the education.