The International Baccalaureate (IB) is a nonprofit foundation headquartered in Geneva, Switzerland, and founded in 1968. It offers four educational programs: the IB Diploma Programme and the IB Career-related Programme for students aged 15 to 19, the IB Middle Years Programme for students aged 11 to 16, and the IB Primary Years Programme for children aged three to 12. IB programs aim to provide an education that enables students to make sense of the complexities of the world around them, as well as equipping them with the skills and dispositions needed for taking responsible action for the future. IB students are responsible for their own learning, choosing topics and devising their own projects, while teachers act more as supervisors or mentors than sources of facts. IB emphasizes research and encourages students to learn from their peers, with students actively critiquing one another’s work. IB programs encourage students of all ages to think critically and challenge assumptions, consider both local and global contexts, and develop multilingual students. To teach these programs, schools must be authorized by the International Baccalaureate. IB programs are different from other curricula because they encourage students of all ages to think critically and challenge assumptions, develop independently of government and national systems, and incorporate quality practice from research and the global community of schools. IB classes are unique from other advanced classes, like an honors-level class or Advanced Placement courses, because they fit into the educational ecosystem created by IB, promote interdisciplinary learning, and critical thinking across different fields of study.