Professionalism in pedagogical acting when working with deaf children and adolescents requires not only a precise examination of the issue of deafness, but also an examination with regard to the skills of qualified experts. The aim of this master thesis is therefore, to learn about the necessary skills which are required in order to work with deaf children and adolescents. All of those, who work together with people in the course of their work, have to be aware of their individual abilities and capabilities, and therefore must develop a professional identity.This master thesis consists of a theory section and an empirical section, whereby the theory section is divided into"deafness" and "professionalism". This section deals with the principles of deafness such as possible causes, the extent and type of hearing impairment, and the history of educational science of hearing impairment is explained. Secondly, the theoretical part focuses on key issues of professionalism, in context with skills and competencies in pedagogical acting. Following this, "professionalism" when working with deaf children and youngsters has been chosen as a field of study. The empirical research is based on a questionnaire, which was given to 55 participants. The respondents were supposed to evaluate skills, which they consider important, concerning professional pedagogical acting when working with deaf children and adolescents. In addition to this they had to specify how these skills are met, should they exist in reality.