The evaluation of vocational education and training (VET) is in the focus of this report. The authors have been members of the working group Evaluation and Assessment within the initiative Flexibility, Transferability and Mobility as Targets of Vocational Education and Training (COST Action A 11) initiated by the European Commission. Within this effort the reports on the progression of the vocational education and training systems have been compiled. They give proof of approaches and results for best practice within the participating countries. While the projects are tied up in the national vocational systems the volume gives evidence of the growing significance of vocational education and training within member states of the European Union.