A growing number of adolescents are using a number of different identities to describe their gender. Schools have been noted for their uninclusive environments and high levels of discrimination for LGBTQ + individuals, yet research has neglected the school experiences of UK gender-diverse adolescents. This article explores the school experiences and navigation strategies of gender-diverse adolescents in the UK, examining the experiences of binary-trans, non-binary and gender-questioning adolescents separately. The data presented in this article come from a large survey of LGBTQ + young people's social experiences; a subsample of 74 adolescents' (25 binary-trans, 25 non-binary, and 24 gender-questioning) open-ended responses were selected for qualitative thematic analysis. Findings highlight that gender-diverse adolescents experience discrimination within the school environment from the curriculum, space, peers and teachers, and a number of strategies, including disclosure negotiation, cognitive restructuring and proactive protection, are used to navigate this environment. Findings shed light on the school experiences of gender-diverse adolescents, and suggest that the British school system is fundamentally unsuitable for non-binary and gender-questioning identities.