Realschule (ʁeˈaːlʃuːlə) is a type of secondary school in Germany, Switzerland and Liechtenstein. It has also existed in Croatia (realna gimnazija), the Austrian Empire, the German Empire, Denmark and Norway (realskole), Sweden (realskola), Finland (reaalikoulu), Hungary (reáliskola), Latvia (reālskola), Slovenia (realka), Serbia (realna gimnazija/realka), and the Russian Empire (реальное училище). In the German secondary school system, Realschule is ranked between Hauptschule (lowest) and Gymnasium (highest). After completing the Realschule, good students are allowed to attend a professional Gymnasium or a general-education Gymnasium. They can also attend a Berufsschule or do an apprenticeship. In most states of Germany, students start the Realschule at the age of ten or eleven and typically finish school at the age of 16–17. In some states, Realschulen have recently been replaced by Oberschulen or Sekundarschulen. In 2006 1.32 million German students attended a Realschule. At Realschule, a student gets an extended education and learns at least one foreign language, usually English. In the state of Baden-Württemberg, after the sixth grade, the student has to choose among technology, home economics, and a second foreign language, usually French. The new subject becomes the student's fifth main subject, after German, maths, science and English; and it is also possible to learn other foreign languages in free workshops. Other subjects are geography, social sciences, economics, history, religious education, and physical education. After the 8th grade a student has to choose between arts and music. High school diplomas obtained in Canada or the United States are usually acknowledged as a Mittlere Reife (graduation from a Realschule). In some cases however students may apply for certain subjects at a university. All students holding an American high school diploma may apply for the Studienkolleg, and after successfully graduating from this they may attend a German university.