The importance of teacher’s diagnostic competences for students’ development

The article focuses on the issue of teacher’s diagnostic competence. In order to emphasize the importance of the issue and to encourage scientifi c discussion, the value of the contemporary teacher’s pedagogical competences was pointed out, among which diagnostic competence was highlighted. Then the importance of diagnostic competence in working with the student and the consequences of its lack, which is the student’s marginalization, were determined. The conclusions indicate the implications for educational practice.