What does IB. means?

The I.B. (International Baccalaureate) is a non-profit educational foundation, motivated by its mission, focused on the student. It has four programmes for students aged 3 to 19 help develop the intellectual, personal, emotional and social skills to live, learn and work in a rapidly globalizing world. Founded in 1968, we currently work with 3,678 schools in 146 countries to develop and offer four challenging programmes to over 1,139,000 students.

Here is a video(: