School-Based Interventions to Prevent Sexual Risk Behaviors Among Thai Adolescents: A Scoping Review

Background: Sexual risk behaviors (SRBs) in adolescents will remain a major global public health concern, particularly in low- and middle-income countries. Many interventions will be developed to prevent sexual risk behaviors among adolescents, including strategies targeting human immunodeficiency virus (HIV), sexually transmitted infections (STIs), unintended pregnancy, and premature sexual activity. Despite ongoing efforts, adolescents will continue to face significant sexual and reproductive health challenges, particularly in low- and middle-income countries such as Thailand. Objective: This study will aim to map and synthesize school-based interventions designed to prevent sexual risk behaviors among Thai adolescents. Methods: A scoping review will be conducted following the PRISMA-ScR. Five electronic databases (PubMed, ScienceDirect, ProQuest, Google Scholar, and ThaiJO) will be systematically searched. Eligible studies will include randomized controlled trials and quasi-experimental designs involving Thai adolescents aged 10–19 years, published in Thai or English between 2014 and 2025. Data will be extracted and analyzed descriptively based on intervention characteristics, delivery modes, theoretical frameworks, and outcomes.