This chapter analyzes the effects of accountability in the Swedish education system from a longitudinal and context-sensitive perspective. Through the case study of a teacher—interviewed in 2018 and 2025—it illustrates the impact of accountability policies in three areas: institutional control mechanisms, the deprofessionalization of teaching, and increasing school segregation. The narrative shows a shift from an educational culture based on professional trust to a model of governance driven by performance metrics, increased hierarchies, and market principles. It argues that, under the discourse of educational improvement, new forms of control have been introduced that put pressure on the teaching profession and undermine the public mission of education, exposing the risks these policies pose in deepening social inequalities and limiting the possibilities for inclusion.