Mass school closures and restricted mobility during the COVID-19 pandemic have intensified matters of technology, teaching, and participation in schools. In response to this situation, this paper examines how attendance practices work during school closure and screen-saturated pandemic isolation at a Swedish upper secondary school. The aim is to empirically and theoretically explore school closure attendance by focusing on the sets of strategies and enactments that make school 'attendable' when being 'in the right place at the right time' becomes ambiguous. A relational materialist methodology is deployed with online interviews with six teachers during the first pandemic wave in 2020. The analysis traces empirical events that enact different school closure attendance devices: the video roll call, attendance performance, and 'click like' in the Microsoft Team-feed. The article highlights how attendance monitoring shifts and how attendance acts upon teaching, and vice versa.