The basic idea of this paper is to state the claim that an increasing number of students with disabilities are included in regular education systems. Accordingly, most teachers are aware of the assumption that working with students with disabilities is a demanding process requiring a lot of investment. In order to ensure quality and safe stay in school of students with disabilities, it is necessary to recognize and above all understand their developmental needs and to create conditions in which students are educated in a way that suits them. It is clear that significant changes are needed in the educational system, which in any case implies ensuring satisfactory teacher education. In addition, the changes relate to the appropriate school capacities, strengthening awareness of the need for inclusion and integration and quality implementation of the task of teachers in preparing students for everyday functioning. It is clear that this would greatly enhance work with students with disabilities. In this regard, the main goal of the study was to point out the importance and significance of teachers' competencies for working with students with disabilities acquired via appropriate training with an aim of implementing successful inclusion of students with disabilities in primary education and the importance of knowledge of special equipment, cooperation with parents and the involvement of such students in all components of school life and work.