The study evaluated training provided to early childhood educators in six European countries on using the Early Childhood Environment Rating Scale-Revised (ECERS-R) through a mixed methods approach. 108 educators participated in the training along with lecturers and external observers. Quantitative results showed educators found the training effective for learning and to use in schools. Qualitatively, strengths included knowledge gained and organization, while weaknesses included language skills and preparation. The mixed methods triangulated sources to understand the training's effectiveness in achieving its goals of enhancing educators' self-evaluation and research skills.