The focus of this study on the effectiveness of education costs is specifically limited to the contribution of education costs to the quality of learning outcomes through improving teacher competencies and providing learning media. The problem is limited to the financing of teacher competencies...

This article was prepared for the Special Issue "Celebrated Econometricians: Katarina Juselius and Søren Johansen" of Econometrics. It is based on material recorded on 30 October 2018 in Copenhagen. It explores Søren Johansen’s research, and discusses inter alia the following issues:...