Islamabad Capital Territory Rawalpindi, and was to be composed of the following parts: However, Rawalpindi was eventually excluded from the Islamabad master plan in the 1980s. Islamabad is subdivided into five zones: Islamabad Capital Territory comprises Islamabad urban and rural areas. The Islamabad Rural consists of 23 Union Councils, comprising 133 villages, while Islamabad Urban has 27 Union Councils. The climate of Islamabad has a humid subtropical climate (Köppen: Cwa), with five seasons: Winter (November–February), Spring (March and April), Summer (May and June), Rainy Monsoon (July and August) and Autumn (September and October). The hottest month is June, where average highs routinely exceed
International School of Islamabad 165 students in January 2003, an all-time low, but enrollment recovered to 374 in 2007–2008. Enrollment declined after 2008. After the Islamabad Marriott Hotel bombing in October of that year, the United Nations and other organizations stated that Islamabad was not a family post, meaning employees of those organizations may not have their family members in the same city. Additional events in Pakistan and neighboring countries caused additional enrollment declines. Each year, 30% of the school's students are new students. Enrollment count: International School of Islamabad International School of Islamabad (ISOI) is an international school in Islamabad, Pakistan, serving K-12.