Today's education brings with it many changes, enriching curricula in accordance with modern knowledge through professional and scientific research, including documents that require it. The development of social skills contributes to the coping of a person or student in certain situations. Schools and teachers with enriched content and appropriate teaching methods, forms of work and strategies can contribute to strengthening the individual who becomes a self-confident and self-fulfilling person. The aim of this paper is to determine the extent to which the cross-curricular topic Personal and Social Development is implemented in twenty school curricula of Vukovar-Srijem County. By working on the documentation, in the analysis of the content of school curricula, it was determined which contents, domains and educational achievements have been implemented in certain forms of teaching. The results are intended to show whether the contents of the interdisciplinary topic Personal and Social Development are implemented in the analyzed school curricula, which are the contents and which domains and its educational achievements are included in certain forms of teaching. The results of the research showed that the cross-curricular topic Personal and Social Development is implemented within school curricula, but not to the same extent, domain A (I) and domain B (Me and others) are more represented than domain C (Me and society). Thus, the positive side and the importance of the interdisciplinary topic are described because its content contributes to the development of social skills and competencies, but also the negative side which describes the extent to which it is not included in the content of school curricula.