Taking a trans-national perspective, my research seeks to examine how the ‘performative’ and individualised culture of schools in the UK and Sweden impacts on practices of judgement and comparison among pupils. Specifically, the research uses an interdisciplinary, mixed-methods approach to investigate body, appearance, and health monitoring in friendship contexts between adolescent girls. Bringing together theoretical contributions from poststructuralist, feminist new materialist and post-qualitative perspectives, my project involves end-users, eating disorder charities and schools in the co-creation of educational resources, designed with an arts-based, socio-critical approach.