The ELSA intervention was designed to build schools' capacity to support pupils' emotional wellbeing needs from within their own resources. A wide-ranging research base spanning over 10 years has grown around the ELSA intervention. This scoping review was commissioned by the ELSA Network to systematically identify and map the current composition of the ELSA research body, including the purpose, methods and range of research available. Guided by Arksey and O'Malley's five-stage framework, 53 studies met the inclusion criteria and were reviewed; including 9 published studies, 31 doctoral or student studies and 14 local authority evaluation reports. When used alongside practice-based evidence, findings provide a basis to inform practitioners' selection and use of intervention. Mapping of ELSA research indicates a tendency towards qualitative approaches, perhaps reflective of challenges measuring an adaptive intervention. Through identifying gaps related to topics, designs and participant voices, recommendations for future research are suggested.