Social competence is our guarantee of survival in this world. Having it is easier to communicate with other people, grow and develop ourselves, we gain new knowledge, and we seek a career and life satisfaction. In this study is presented a theoretical concept of social competence and practical quantitative international study conducted in Belgium and Lithuania. Comparative analysis of research was done between Belgium and Lithuania students and teachers’ in communication and cooperation skills. In this study is presented detailed investigations. The results showed that the stronger social competence is in Belgium (Charleroi) institution. Teachers and students are more confident and more appreciated to each other. The study revealed that in Belgium adult education institution is a stronger developed a social existence of learners and teachers, faith and trust to each other, teachers and students feel safer.