In migration research there has not been much work on temporal dimensions of migration experiences (with the exception of Griffiths in this journal). This article investigates migrant students' temporal framings of their lived versus imagined school careers, drawing on participant observation and interviews with students in language introduction classes in upper secondary school in Sweden. The findings document student experiences of temporal desynchronies: as seen in reports of slow time and repetition, suspended time, temporal uncertainty and blockage. The analyses highlight the students' experiences of being temporally out of line (in Ahmed's words). The narratives of their past and future school lives reveal a discontinuity between the students' lived school experiences, on the one hand, and imagined school careers on the other, contrasting life as lived with both their own hope and plans and with the school careers of other students. The analyses highlight the importance of including temporal dimensions in the analyses of post-migration school landscapes.