Abstract (eng)
In the context of school education, different people meet each other every day, the resulting heterogeneity and diversity holds challenges and opportunities. In addition, the heterogeneity can lead to conflictual situations, which the participants classify as critical. The aim of this paper is to reconstruct critical incidents in connection with heterogeneity from the perspective of students and teachers. The critical incidents were recorded qualitatively, using the critical incident technique according to Flanagan (1954) and included a total of n=43 students' narratives about critical incidents from their own school days. The evaluation was based on the qualitative content analysis according to Mayring (2015). The results show different culturally influenced interpretations, devaluation of differences as well as teaching disruptions as leading conditions. Central areas of tension are contradictory cultural and social values, discrimination, as well as border and responsibility conflicts. Consequences become apparent on the relationship and emotional level of the involved people as well as through school and disciplinary effects. From this, the need for further development of teachers' diversity competence, conflict resolution skills and inclusive school development can be identified.