The importance of enhancing social and emotional skills in educational settings has gained prominence, with many countries and organizations embracing the Social and Emotional Learning (SEL) framework to equip individuals with the tools needed for shaping a self-identity, emotional regulation, goal achievement, empathy, nurturing relationships, and responsible decision-making and overall well-being. In this paper, we aim to connect the globally acknowledged Collaborative for Academic, Social, and Emotional Learning SEL framework with international policies that underscore the importance of social and emotional skills in the school context. To accomplish this goal, we first provide a brief overview of the key components of the SEL framework. Subsequently, we explore two significant educational policies within the European context. The first policy is the World Health Organization Health Promoting Schools initiative. We present its objectives, a WHO-affiliated program example, the promoted and assessed competencies of students, and its results, connecting its framework with the CASEL SEL approach. The second focus is the Organisation for Economic Co-operation and Development Study on Social and Emotional Skills, describing its developmental process and the assessment framework. Finally, we describe the alignment of SEL with these European educational policies and illustrate their role in advancing and improving the evaluation of SEL initiatives in educational environments.