The study of the assessment of health behaviours in school-aged children aims to enhance our understanding of healthy adolescent behaviours, as well as adolescent health, and well-being in their social context. Main objectives of this study include: To describe the social context of youth health: family life, peer relationships, and the school environment; To assess health-related behaviours: eating habits, physical activity, oral health; To describe the current state of mental health and well-being of young people: positive health, major health complaints, sleep patterns, sense of loneliness and anxiety disorders, weight and body image; To assess the prevalence of risky behaviours: smoking, alcohol and drug use, sexual intercourse at an early age, fighting and bullying, physical and emotional abuse; To assess the relationship between the social context of youth health/health status/youth-related health behaviours/youth risk behaviours and their demographic characteristics (age and sex); To describe the impact of COVID-19 on Albanian adolescent’s life.