The German school system is decentralized and controlled at the state level, so there is no single national system. All children attend primary school from age 6 for 4-6 years. Then students are placed on different educational tracks, like Hauptschule (vocational), Realschule (higher vocational), Gymnasium (academic), depending on their abilities. Students must attend school for 9-10 years to complete their compulsory education. The different tracks lead to different qualifications, like the Abitur for university entrance. However, the federal states coordinate to have common standards and qualifications despite regional differences.