Libertarian Doctrine And Education

Bryan Kaplan believes that there is no country on earth that is under-educated. Here is where you end up when libertarianism becomes dogma:

Education's a good like any other.  If people refuse to spend their ownmoney for more education, then it's presumably just not worth it,right?  This is especially clear because governments habituallysubsidize education.  Libertarians should believe that there's anoversupply of education for the same reason they believe there's anoversupply of sport...