This thesis explores how newly arrived students experience conditions for learning and inclusion in their lived transitions within the Swedish school system. The thesis deploys an ethnographic approach combining interviews with participant observation. The data comprise interviews with 22 students at three points in time and three cycles of participant observation over the course of 15 months (in three municipalities of different sizes). Deploying the concept of post-migration ecology, Study I maps the structural conditions that the educational landscape offers newly arrived students after migration to Sweden. The findings point to the emergence of a parallel school system through which the newly arrived students’ individual needs risk being overlooked. Study II uses a sociocultural perspective to compare the pedagogical and social resources offered in introductory and regular classes, concluding that introductory classes are characterised by weak challenges and strong support, whereas the opposite is true for regular classes. From a critical phenomenological perspective, Study III focuses on the individual students’ embodied experiences of being out of line in school (in a Swedish monolingual school setting). Paradoxically, the separate introductory class in this setting apparently offers a sense of inclusion, whereas the regular class is related to student experiences of exclusion. Study IV analyses temporal aspects of the students' lived transition to upper secondary school. Drawing on a phenomenology of blockage, it documents how extended periods in introductory programmes create a disjunction between the students' imagined and lived school careers. In brief, through analyses that encompass organisational and structural conditions, as well as lived experience, this thesis shows that the lived transitions of newly arrived students can be understood as instances of parallel school lives, a discontinued past and a postponed future. / <p>At the time of the doctoral defense, the following paper was unpublished and had a status as follows: Paper 4: Manuscript.</p> / Newly arrived children and learning - a cross-disciplinary study on the learning conditions for newly arrived children in Swedish schools