The International School of Ulaanbaatar (ISU) is a private, non-profit school that has been operating since 1992. It follows the International Baccalaureate (IB) program with Primary Years Program (PK-5), Middle Years Program (6-10), and Diploma Program (11-12). The school has a Board of Trustees that oversees operations and appoints the Director. ISU uses criteria-based assessments and issues report cards with achievement levels or grades. It emphasizes approaches to learning and has a 90% attendance policy. The school communicates with parents through various means like Medee newsletters and the student planner.