Public Education is the single most important government program to promote economic prosperity and fight poverty.
That said, what is the best way to support public education?
A New York City charter school is trying something new:
http://www.nytimes.com/2009/06/05/education/05charter.html?ref=educationWhen school vouchers and charter schools were proposed, I too reacted as most liberals do and opposed any changes to standard pubic education. Now, I must confess I am excited to see what the results of paying teachers higher salaries will be.
Even if the school itself is a failure, we will learn more about what it takes to establish the premier public education system in the world.
Nor is it clear to me that every child will be best suited by the same education methodology.
I now stand firmly in favor of the charter school movement. If schools who accept school vouchers are also required to meet similar standards, then I would be in favor of school vouchers too.
The economic analysis:
Education is an investment in human capital. The student gains skills and knowledge that will make him or her a more productive worker or investor. The returns on elementary, secondary, and undergraduate education are immense and if it were possible, a student would borrow to pay for schooling.
The capital markets however are not well suited to finance general education since there is insufficient visibility to the earning power of a student. Further, most grade school students are minors and are generally unable to make their own economic decisions. Nor are parents generally able to authorize borrowings on behalf of their children.
An educated populace additionally provides the state with many positive externalities. Educated citizens are more likely to obey the law and in voting, more likely to make wise laws. The reduction in crime due to the increased earning power of education reduces costs of enforcement and property insurance.
Mandatory free public education attempts to correct many of these inefficiencies in the competitive market for education:
1. Free public education provides a subsidy for the poor. Poor parents and families are most likely to be unable to afford to pay for their own education (through savings or borrowings) and are most likely to commit crimes of desparation if legal earning power is insufficient. A subsidy in kind can restore efficient consumption decisions by compensating for externalities. (Compensation for externalities is an exception to the general preference for subsidies in cash over subsidis in kind.)
2. Mandatory public education provides protection for children. As parents stand as agent to a child's principal, there may be an incentive for a parent to remove his or her child from school in order to force the child to work or otherwise fail to be educated. Mandatory education requirements (including for those children who are home schooled) protects children from unwise parental decisions.
Neither of these objectives however require that the government itself provide the education facilities.
In the early history of public education, when education was such a significant expenditure it may be impossible for the competitive markets to provide a sufficient amount, it may have been justified for the government to provide education. As the economy has grown significantly over the last century, we can transition to a competitive market education system. In suburban or rural areas with lower population density, there may still be a need for publically provided education.
This economy of scale, in that its more cost effective to teach many students together than each one individually, may create a trend towards a natural monopoly in areas of lower population. For example if an area only has 30 students per grade level, then a single teach per grade level is necessary and so a single monopoly school is necessary. If an area has 300 students per grade level, then perhaps 10 schools can operate and create competition.
It's not obvious whether a natural monopoly school should be run by the state or be contracted to the private sector.
The general observation here is that it is not a "free market" that is superior but a "competitive market". The market is generally able to provide higher quality goods and services at lower cost than a government monopoly provided that the conditions of perfect competition are met.
In the case of education, the government needs to compensate for financing and externalities, the principal/agent problem, and for the possibility of a natural monopoly. With these corrections, it becomes possible for the competitive market to assume the remaining tasks.