Local services in Lagos
Lagos is loosely classified into two main geographical areas—the "Island" and the "Mainland". Lagos Island contains a central business district. This district is characterised by high-rise buildings. The island also contains many of the city's largest wholesale marketplaces (such as the popular Idumota and Balogun Markets). A huge population of Lagosians also live on the Lagos mainland, and most industries are located there. The mainland is known for its music and nightlife, which used to be in areas around Yaba and Surulere. In terms of administration, Lagos is not a single municipality and therefore has no overall city administration. The geographical city limits of Metropolitan Lagos comprise 16 of the 20 Local Government Areas, which together comprise Lagos State. The Lagos State Government operates state schools. The education system is the 6-3-3-4 system, which is practiced throughout the country (as well as by many other members of the Economic Community of West African States).