This document aims at identifying important competencies for pedagogical content knowledge of Computer Science pre-service teachers at the end of the theoretical part of their education by means of empirical research. The goal of this study is to detect whether pedagogical content knowledge courses for Computer Science pre-service teachers are sufficient or whether the curriculum should be adapted. For my research, I am using video recordings and interviews to measure these competencies. Moreover, I based my study on the pedagogical content knowledge competence model developed by the "Competencies for Teaching Computer Science" research group.