The main aim of EffecTive is to identify and understand the conditions to improve teachers’ pedagogical digital competence (PDC), considering the conditions' effectiveness and efficiency. We define effectiveness as a positive impact of the training on the quality of education (improved teachers’ PDC, students’ learning outcomes, inclusive learning environment). We define (cost) efficiency as the best way to transform the costs to benefits. EffecTive aims to (1) evaluate selected policy measures in the field of teacher PDC in five countries as well as (2) the efficiency and cost effectiveness of the related elements of 12 training interventions on teachers’ PDC and student learning outcomes as well as measures of equity and inclusion. The selected policy measures and training interventions will relate to teachers who work in primary and lower secondary schools because these were specifically targeted by recent policy measures in the EU.