You ask-
Why did governments not subsidised for the education of its CHILDREN. Rather that allowing the educational system to free marketed. Now, look at the state of your educational system.
I suspect you are directing this at the US, and I would like to clarify a few points that may challenge your perception. Our public education institutes are subsidized here in the US. At issue for Americans is whether that should remain a local tax base issue, a regional tax base issue, a state tax base issue, or a national tax base issue. The issue has to do with control, which tends to move with the tax base.
The differences in education can be significant between public schools, private schools, and home schools even within a single local community. Each of these is its own education system, so any reference to the state of a system needs to define which system. All of these can be generalized as a single system, but such a generalization will miss key elements in each.
I am not aware of a particular education system elsewhere in the world that can be pointed to as the absolute best practice model for everywhere. There are significant differences in objectives and requirements among the various cultures and nationalities. To assess any education system without understanding and reference to the social context it exists implies a level of arrogance or bigotry.
As a nation of the people, by the people, and for the people it is not up to our government to decide how socialized we become. It is up to us. From time to time our elected leaders forget where the power lies, and we have to remind them. On occasion, a particular leader or party will seem to have changed this, but so far they have all received a clarification during subsequent elections.