From the article:
The first conclusion is that the UNESCO notion of education as a global common good, and the provider of common goods (plural), is more useful than the notions of public good and public goods.
Public goods are ambiguous, pulled between the technical economic idea of non-market production and the political idea of state sector production. Non-government organisations contribute to common benefits, alongside governments. Further, to say something is ‘public’ tells us nothing about its content.
UNESCO’s common goods are goods of community, solidarity, tolerance, equality, capability and human rights – goods that build positive relations between people, such as equality of opportunity in higher education.