How could the technicality arising from eleven percent of students being excluded from a PISA test in Sweden trigger a polarized debate followed by investigations by both the OECD and national authorities? This question is explored in the study by drawing on discursive institutionalism, especially the concept of normative background ideas, communicative discourse, and the "power in ideas". Communicative discourses can be referred to as discourses explained by logics of position and logics of ideas. The normative background ideas are related to a critique or acceptance of receiving a high number of immigrants during a short period of time a few years before the 2018 PISA test was conducted. The concluding reflection poses the questions of at what point it is reasonable for newly arrived students to participate in the PISA test and whether the PISA test really measures the quality of the school system, as suggested by the OECD.