From the IBO.org website itself, we have an explanation of the connection to UNESCO and the United nations…

UNESCO

“The IB has been recognized as a NGO of UNESCO since 1970 and currently has the status of “formal consultative relations as a network” with UNESCO. IB representatives participate regularly in UNESCO meetings and comment on UNESCO proposals in education. Some projects have received UNESCO funding—see Cambodia and Nigeria in the list of partnerships (126 kb, PDF) and exchanges with governments and inter-governmental organizations (IGOs).”

Clearly, IB is the product of the United Nations, UNESCO, and promotes their vision for the world – which is internationalism vs American sovereignty.

How dangerous is the UN’s globalism? Many feel it is responsible for the decline of our country.