“…However, while these trends may account for the observed increase in overall social fluidity during the 20th century, it is not clear whether they also led to an increase in the mobility chances of individuals from unskilled working-class backgrounds. With the notable exception of an extension of compulsory schooling in all German states ( Bundesländer ) during the two decades following World War II (see Betthäuser, 2018; Müller and Haun, 1994), there have been few reforms of the German education system, which can be expected to have substantially reduced the educational inequality between this group and people from more advantaged backgrounds (see, Bukodi et al, 2018, Neugebauer et al, 2013; Schneider, 2006). Moreover, given the generally low level of educational attainment of people from disadvantaged backgrounds (Shavit and Blossfeld, 1993), it is questionable whether the trend of educational expansion in Germany has increased the educational attainment of this group to an extent that would have given rise to a weakening of the effect of their parental class background on their labour market chances.…”