Education is a phenomenon with very obvious links to three main themes of Michel Foucault’s work: knowledge, subjectivity and power. Foucault has been characterized, and with reason, as a philosophical nomad, always on the move. This unceasing movement might make his work seem like a series of provocative desertions of promising themes and standpoints. However, this should not prevent us from seeing that, like a nomad, he was always practising the same trade: the name of the trade, we argue in this chapter, is a history of truth. We thus emphasize the continuity and coherence of Foucault’s work rather than its ruptures. We also believe that treating knowledge, subjectivity and power as interrelated, which in our opinion is the essence of a Foucauldian history of truth, can offer new insights into research on education.