The main aim of the graduation thesis is to present educational work in special educational institutions. Children and students with developmental disabilities, given the degree and type of disability, cannot always be educated in regular educational institutions. Therefore, an effort was made to emphasize the importance of special educational institutions within the education system in order to indicate that such institutions do not contribute to exclusion from the life of the community, but rather focus on social inclusion. The conducted research covered early and preschool, and primary education. The research was conducted in DV Latica-Zadar and OŠ Voštarnica-Zadar. The aim of the research was to identify and analyze the programmatic, organizational and personnel assumptions of inclusion in the aforementioned special educational institutions and their cooperation with key external partners in order to see the inclusion of children and students with developmental disabilities in upbringing, education, and society as a whole. The semi-structured interview method was used with the application of the interview protocol instrument and 16 interlocutors participated in the research. The results of the research indicated that DV Latica-Zadar and OŠ Voštarnica-Zadar successfully satisfy the needs of children and students with their programs by promoting social inclusion. Individual educational programs and different work methods enable children and students to develop abilities to participate in everyday life. The material equipment and didactic materials are at an exceptional level, and the competence of the educational personnel is enhanced through various educations, seminars and workshops. Along with lifelong learning and improvement, they progress with time and technology. However, OŠ Voštarnica-Zadar lacks a basic program for students with severe and multiple disabilities. Also, the lack of educational personnel was detected and there is a need to increase it in both of the special educational institutions. Furthermore, the importance of teamwork of all the experts together with high-quality communication, partnership with parents, and exceptional cooperation with the local community, which includes the City and the County, was recognized.