Critical educational literature suggests that an increased reliance upon neoliberally inspired management technologies transforms the very foundations from which images of the ideal teacher are constructed. The purpose of this paper is to add to this literature by (i) identifying and analysing a number of "theoretical qualities" associated with performative technologies, and (ii) discussing how such qualities contribute to the emergence of performative teacher subjectivities. Drawing upon the findings from a qualitative interview study into the extensive use of performative technologies in a Swedish upper-secondary school, we discuss four key roles of performative technologies--referred to as "territorializing, mediating, adjudicating," and "subjectivizing"--and the "intensity" by which they play out such roles. A key conclusion is that the intensity by which performative technologies territorialize, mediate, and adjudicate educational practices affects self-reflection and internalization among teachers and, hence, is important for understanding the subjectivizing role of performative technologies.