The aim of the thesis is to present the teacher as the key factor in the process of integration of learners with specific learning difficulties. The theoretical part deals with legislation concerning the education of learners with specific learning difficulties in the Czech republic, integration and specific learning difficulties as such. The chapter devoted to the teacher illustrates his position in the teaching-learning process together with the demands placed on the teacher when teaching learners with specific learning difficulties. Subsequently, the importance of cooperation between the teacher, parents and specialists is emphasized since parents and specialists complement the teacher's key role in the process of integration of learners with specific learning difficulties. The practical part aims at ascertaining what demands are placed on the teacher throughout the teaching-learning process. The data gained through observations and interviews led to the design of didactic materials consequently verified at a particular school. Analysis of the gained data offered its interpretation and subsequently the articulation of the conclusion of the thesis.