School districts are quasimunicipal corporations created and organized by state legislatures and charged with the administration of public schools within the state. A quasimunicipal corporation is a political body created for the sole purpose of performing one public functionStates divide up their school systems into districts because localized administration and policy making are more efficient and more responsive to community needs than one state-level bureaucracy. A school district encompasses a specific geographical area with defined boundaries. In most areas, the head of the school district is called the superintendent. Each school district contains at least one school. Typically, a school district includes primary schools, also called grade schools, middle or junior high schools, and high schools. A school district's boundaries may be the same as the boundaries of a city. Multiple school districts may exist within larger cities, and in rural areas, a school district may encompass several towns.