According to the United Nations, to be precise the UNDP, the combined gross enrolment ratio in education is 67,5% in the entire world. On details about how this is calculated, see the human development report.

source: http://hdr.undp.org/en/media/HDR_2009_EN_Complete.pdf See page 174

You can also see in this report that there is a difference between men and women in education. In some countries, we see that girls are denied basic education, whereas in other countries women represent the majority of university students. It´s an interesting difference.

I see now that I´m also required to offer my credentials here I have a university degree, and am currently working for a research centre which is part of the university. We link business, government and NGOs with scientific research to find solutions for sustainable development. 

I  think university or high school education is not only
main indicator or measurement for educated people.
And I think university education and intellectual culture are
very different concepts.

Intellectual culture is very important virtue.
"People Culture" depends on family culture, education
and intellectual culture
(Literature, fine arts, philosophy, universal law,
world history, science, etc).

These fields and sciences (Literature, fine arts, philosophy,
universal law, world history, etc) only make people
cultured, well-educated or intellectual.