The International Baccalaureate (IB) program, in which students in the last 2 years of high school can earn a diploma recognized for university admission throughout the world and for course credit at colleges and universities in Canada and the United States, is described. Information about the program is provided in the following areas: (1) curriculum; (2) grading and examination system; (3) credentials; (4) adaptability of the program to the participating school's curriculum; (5) teacher orientation; (6) costs and fees; (7) list of colleges and universities in Canada and the United States which recognize the IB diploma; (8) governance of the program; (9) financial support; (10) list of universities outside the United States and Canada which recognize the IB diploma; and (11) IB schools outside Canada and the United States. The curricular materials and their costs are listed and the origin of the International Baccalaureate idea is described. (JH)