This litterature study is an analysis of the concept of tolerance, as it is a central value in the curriculum for the Swedish upper secondary school (Gy11) and therefore an important part of interpreting the specific curriculum for religious studies. The scientific approach is drawn from curriculum theory and the method of analysis is hermeneutic. Four different understandings of the concept are presented from academic literary sources. To further problematize the understandings of the concept, critique against a ”pedagogy of tolerance” as expressed by normcritical pedagogical writers and scholars is presented and analyzed. Implications regarding didactical practice are discussed in the light of previous analysis. Two main criteria for tolerance were found in all four understandings. These criterias outline the necessary components of an act of tolerance. The critique mainly focuses on said act, as it is an act of power and differentiation. This implies the didactical importance of awareness regarding the complexity of an act of tolerance.