Islamabad-Rawalpindi metropolitan area the larger metropolitan area. It uses dedicated bus lanes for all of its route covering 24 bus stations. As Pakistan's capital city, Islamabad serves as the seat of the federal government and is the country's political center. Rawalpindi has remained important historically, as it hosts the headquarters of Pakistan's army. Rawalpindi also temporarily served as the federal capital when Islamabad was being built in the 1960s, to replace Karachi as the capital. Islamabad-Rawalpindi metropolitan area The Islamabad-Rawalpindi metropolitan area is Pakistan's third most populous metropolitan area. It consists principally of the twin cities of Islamabad and Rawalpindi, along with smaller
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.