This master thesis aims to shed light on teachers' responses to the regulation that states that a student's test results in a national test must be taken into a “special consideration" in the teacher's grading. Ten teachers took part in the study during the autumn of 2020, all being teachers in social science subjects in the Swedish secondary school (school year 7-9). A method based on semi-structured focus group interviews is used to answer three research questions. The study’s theoretical framework derives from curriculum theory (i.e. teacher agency; selective traditions and theory associated with assessment). A thematic content analysis identifies two categories of factors contributing to the teachers’ perceptions and application of the regulation. The first category consists of factors that relate to the teachers' views on the purpose of the tests, their principles for construction, their content and their level of difficulty. The second category includes factors related to teachers’ professional practice and agency. The results of the study show how teachers’ responses to this relatively new policy (carried out in 2018) is affected by circumstances relating to students’ need for adaptations (e.g. poor language skills). The main conclusion is that teachers respond to this change of policy in different ways. Thus, it could be argued that further and more detailed information is needed in order to successfully implement the changes and reach a consensus among the teachers. Prior to that, a reasonable assumption is that challenges regarding equality and justice in terms of students’ knowledge levels and final grades will remain.