International School of Islamabad International School of Islamabad International School of Islamabad (ISOI) is an international school in Islamabad, Pakistan, serving K-12. Established in 1965, it moved to its present site in Islamabad in 1975. Previously it was located in Rawalpindi. The United States Military Advisory Aid Group (USMAAG) established a one-room school in Rawalpindi, Pakistan in 1965; the school moved to a prefabricated building located on of land in January 1966. While the school was in Rawalpindi it served grades K-8. Initially the younger students directly took classes while correspondence course were used for higher grade levels. Wives of UMAAG employees taught the
Islamabad Marriott Hotel bombing parliament. The Marriott was the most prestigious hotel in the capital, and was located near government buildings, diplomatic missions, embassies and high commissions. During the investigation, three suspected terrorists were arrested by the Pakistani police. They were suspected of having facilitated the suicide bomber. However later they were acquitted of all charges as no evidence was ever presented against them. A few months after the hotel's bombing the Government of Pakistan had re-constructed it, and the Islamabad Marriott reopened officially on 28 December 2008. The hotel blast caused a severe natural gas leak that set the top floor of the