Abstract
INTRODUCTION: Sexual and reproductive health (SRH) for adolescents is a global public health concern. Access to SRH information and services regarding contraception is necessary, particularly in underserved regions, such as the French overseas territories of Reunion Island and Guadeloupe, where indicators for teenage pregnancy and abortion are significantly high. This study protocol describes the methodology to be used to assess the feasibility of a peer-led contraception education programme for high school students using social media. METHODS AND ANALYSIS: A multicentre, exploratory sequential mixed-methods with a pre-post design, prospective study is being conducted in Guadeloupe and on Reunion Island. The qualitative component started on 31 May 2025, and the study will continue until 30 June 2026. Participants will be aged 15 to 19 years and will attend high school. In Phase 1, focus groups will explore the adolescents' perceptions of peer influencers in contraceptive education and their suggestions for organising a prevention programme on social media. These findings will directly inform the intervention in Phase 3. At this stage of this phase, peer influencers will also be identified. Phase 2 will train selected peer educators in SHR, digital content creation to prepare them for intervention design and delivery. Phase 3 consists of the co-construction, implementation and evaluation of the intervention. Outcomes will include feasibility, acceptability, adoption, fidelity and exploratory effectiveness. The primary outcome will be peer engagement defined as the completion of at least 70% of the planned educational tasks. ETHICS AND DISSEMINATION: This study has received ethical approval from the Comité de Protection des Personnes under RIPH3 (ID-RCB: 2025-A00358-41) and will follow the French ethical standards for low-intervention research. Results will be shared in scientific publications and with participating schools. TRIAL REGISTRATION NUMBER: NCT06943209.