In Europe, many school systems soon branch apart into parallel but unequal tracks. – Academic and social levels – typically followed by the children in different social classes. In Switzerland, after attending for grades of Primarschule, children are separated in three groups based on academic achievement. The lowest performers finish out their compulsory education in primarschule and then usually take up apprenticeships for entry in the manual trades. The middle groups’ advances into sekundarschule and from there usually into private schools for advance training in business and management. The most academic gifted students attend progymnasium fo five years, then usually advance gymnasium for four more years.