Evening students / general characteristics / problems having a job / motivations / leisure activities / study: success and problems / comparison to day-school / social control / patterns of interest / self-evaluation / family background especially educational aspirations and interest of parents during upbringing / socialization / experience of the negative effects of upward social mobility / causes of success.Background variables: basic characteristics / characteristics of parental family/household / occupation / employment / income / capital assets / education / politics