Julian Huxley was the first Director-General of UNESCO in 1946. He was an evolutionary biologist, eugenicist, and internationalist. He believed in population control through eugenics, conservation, felt a "...drastic reorganization of our pattern of religious thought is now becoming necessary, from a god-centered to an evolutionary-centered pattern", was an advocate of birth control and population control, "...believed that the lowest class in society was genetically inferior", and that the world should operate as one.
In 1946 Huxley prepared a 60 page paper "UNESCO: its purpose and its philosophy" outlining what he thought the role of UNESCO should be. UNESCO highlights from this paper are here. You will see the support of international education, the use of persuasion and propaganda to overcome the resistance to change, the use of media to achieve this, and support of collectivism.
And as recent as 2004 there has been ongoing support of "Social Engineering for Global Change".
This is also called Common Core, the indoctrination of children for social change.