Theoretical Background

In the following chapter, the concepts of inclusion, self-concept, and collaboration, which are the foundation of this thesis, will be presented. All three terms are initially defined before being explored in greater depth, for example, through existing theoretical models and popular value systems. The concept of inclusion will be thoroughly illuminated from an educational perspective, the chapter provides different interpretations for inclusive education and introduces a value hierarchy of inclusion. Further, this chapter includes an introduction to self-concept and its overarching domains, such as professional self-concept or teacher self-concept. The chapter then continues with an overview of teacher collaboration and different forms of cooperative structures and practices before concluding with the topic of teacher satisfaction.