to the social and economic challenges of the "knowledge economy" (Bell 1974; Drucker 1993), as it promotes economic growth and development (Hanushek and Woessmann 2012; Glaeser et al. 2004), while also contributing to maintaining social cohesion and equality (Busemeyer 2015; Solga 2014). As a corollary to the general positive effects ascribed to education, popular support for public investment in education, as documented in existing public opinion surveys, is consistently high and widespread (Ansell 2010; Busemeyer 2012 Busemeyer , 2015 Garritzmann 2015). Political parties across the spectrum have been found to subscribe to the goal of improving and/or expanding education in their election manifestos (Jakobi 2011). In sum, these are all indications of why policy-makers should care deeply about the reform and continued upgrading of public education systems at all levels, including early childhood education and care, general schools, vocational training, and higher education.