The National Orthodox School-Shmaisani (NOS) is a private, non-profit, co-educational day school in Amman, Jordan, affiliated to Greek Orthodox Christianity. NOS recently became a candidate school for the International Baccalaureate Diploma Programme which it plans to start offering for Grades 11 and 12 students starting the academic year 2018/2019. The school is an accredited member of the Council of International Schools (CIS).