This paper presents an empirical study on leadership actions related to education for sustainable development, i.e. education that embraces ecological and socio-economic perspectives to foster students’ awareness of the importance of long-term sustainable development. The aim is to identify leadership actions that enable or constrain permanent implementation of such educational perspectives. Empirically, the study is based on data acquired in a school improvement project on sustainability, involving five schools in a Swedish municipality during the years 2016 to 2021. Data were collected in two rounds, in 2018 and 2020, through interviews with school leaders. A theoretical framework including the coupling mechanisms concept and previously identified organizational routines is applied in analysis of the rich data acquired to explore the school leaders’ reported actions, associated routines and their outcomes. The results reveal leadership actions that enable, and others that constrain, long-term establishment of education for sustainable development. The study confirms the importance of early establishment of a holistic educational idea embracing education for sustainable development, and both communication and feedback systems for leaders on its compliance. The study also shows the value of collegial structures and transformational leadership actions that prevent the fading or failure of intended implementation.