Mass Shootings in US Schools

If the population of the country is fed up with psychos periodically shooting up US schools the best answer to the problem is simple. Close public schools. 

The US is supposed to be the epitome of free market economics. At the same time its taxpayer-financed public school system is one of the biggest experiments in socialism on the planet. Even the private, often religiously affiliated, schools and the few charter schools are inspected and subject to control by local and national governments. 

While the public schools are ostensibly administered by locally elected school boards who have the ability to select curriculums and other features like dress codes they must adhere to the requirements of the state for subject testing and results. Teachers unions also have a say in what's taught in K-12 schools. The ideas of the teachers may not coincide with those of the students or their parents.

The motive for a public school education system is to produce productive, tax-paying citizens, people who will be able to perform jobs in the modern economy. But jobs as we know them today are a new concept in the human experience. Seventeenth-century Europeans didn't have employment as we know it and pre-Columbian Americans didn't either. 

Since the idea is that normal Yankees should be able to successfully step into the competitive work environment, what makes us think that the public educational system is the path to this end? There's been a constant complaint about the quality of learning in the US. Maybe there are other ways.

For instance, why should the public itself feel a responsibility to provide educated workers for business? Tax revenues aren't the obvious source for the funding that business uses to build its facilities, maintain and operate them, market their products, etc. Why should they feel that the country as a whole is responsible for providing them with a free, educated workforce? Wouldn't another option be for corporations to have their own educational institutions to teach their future employees everything they need to know to make the business a success, and at their own expense? They could identify prospective candidates for employment at an early age and give them the education they need. Corporations like Boeing or General Electric could have their own primary, secondary and engineering schools that could produce exactly the kind of employees they need. Mass school shootings would be less likely to occur as well.