The Global School-based Student Health Survey (GSHS) is a collaborative surveillance project designed to help countries measure and assess the behavioural risk factors and protective factors in 10 key areas among young people aged 13 to 17 years. The GSHS is a relatively low-cost school-based survey which uses a self-administered questionnaire to obtain data on young people's health behaviour and protective factors related to the leading causes of morbidity and mortality among children and adults worldwide.

The GSHS provides accurate data on health behaviors and protective factors among students to help countries develop priorities, establish programs, and advocate for resources for school health and adolescent health programs and policies; allow international agencies, countries, and others to make comparisons across countries regarding the prevalence of health behaviors and protective factors; and establish trends in the prevalence of health behaviors and protective factors by country for use in the evaluation of school health and youth health promotion.

The GSHS uses a standardized scientific sample selection process; common school-based methodology; and core questionnaire modules, core-expanded questions, and country-specific questions that are combined to form a self-administered questionnaire which can be administered during one regular class period.

The 10 core questionnaire modules address the leading causes of morbidity and mortality among 13-17 year-old students worldwide: alcohol use, dietary behaviors, drug use, hygiene, mental health, physical activity, protective factors, sexual behaviors, tobacco use and violence and unintentional injury.