The article examines the social and communicative activity of primary school children as an individual's actual ability in the process of successful implementation of the concept of the New Ukrainian School.The purpose of the publication is to identify and outline the relationship in the process of forming a comprehensively competent personality between social and communicative activity and key competencies, social literacy, socialization perspective, creative thinking, social interaction, worldview, communicative literacy, teamwork and adult, primary schoolchildren's proactive behaviour.On the one way, due to the introduction of the concept of the New Ukrainian School for the formation of social and communicative activity of primary school children, new favourable psychological and pedagogical conditions are opening up. On the other way – the possession of a person's social and communicative activity or the presence of its natural potentials simplifies the process of forming a vitally competent person.The need for a comparative analysis of social and communicative activity and the conceptual paradigm of the New Ukrainian School is caused by the need for a qualitative change in the educational process in educational institutions and the low level of social and communicative competence of junior students. In the course of the research, it was revealed that the concept of the New Ukrainian School is focused on the intensive formation of the personality of primary schoolchildren in his social and communicative activity. In order to form a valuable and vitally competent personality, in our opinion, it is necessary to create psychological and pedagogical conditions for the formation of social and communicative activity, based on the conceptual provisions of the New Ukrainian School.