Theory of origins of the paper starts from holistic and humanistic approach to upbringing and education, which has a goal of comprehensive development of student. An integral children's development can be encouraged by thoughtful planning of school activities in the school curriculum. Co-creators of the school curriculum (teachers, students and parents) need to create different school activities that will give a chance to the students to express their knowledge, skills and capabilities, and to develop socially as well. In the period of middle childhood there is a special importance is of the social development because the first friendships are made than, strengthens the influence of the school at the social development, and the influence of the family is still present there. In order to understand better the children's social development the paper will display the theories of social development and the research results of the influences on social development of the student. Understanding of the family, school and peer influences on the social development of the student is of an extreme importance as a starting point for creating school activities that would encourage not only social but also integral development of the students.