Background The proportion of young people experiencing poor mental health and well-being is increasing, placing this group at high risk of not completing secondary education. Educational attainment and health status are strongly correlated, underscoring the need for interventions to address this development. Approximately half of Danish 10th grade students report feeling tired of school, while one in four report pressure and low academic confidence. Schools represent a unique setting for health promotion by enhancing social and emotional competencies, emphasizing the necessity of positioning the school as a health-promoting environment for 10th grade students. In one Danish local community, a teaching component focused on life-skills for 10th grade students has been developed and tested over several years. Positive outcomes have been reported, although the experiences also revealed a need for organizational and structural changes to support implementation and enhance impact. Research supports such approaches, recommending whole-school interventions that emphasize health-promoting structures both within the school and in the broader community. The My Life Initiative My Life - I Decide is a health-promoting school intervention targeted at 10th grade students in Denmark. The purpose of the My Life research project is to develop and evaluate the processes, effects, and scalability of a health-promoting school intervention aimed at improving physical and positive mental health and school well-being among 10th grade students. The intervention is based on a health-promoting school approach and incorporates teaching inspired by outdoor-based learning, the life psychological method, action learning, and continuous evaluation and implementation of health-promoting actions at class, school, and community levels. The health and well-being curriculum consists of 28 lessons delivered over 8-10 weeks. The program focuses on ten life-skills designed to strengthen self.efficacy, social, emotional, and health-related competencies and school well-being. Lessons are delivered by a local community health consultant in close collaboration with one or more 10th grade teachers. This organizational structure has been well-received, as it injects new energy into teaching, strengthens cooperation between schools and local communities, and builds teacher capacity. Implementation of health-promoting actions at the school and community levels is facilitated through an evidence-based, system-oriented co-creation process. This process involves representatives from schools (teachers, students, and leadership), local community health consultants and coordinators, and civil society actors. The aim is to create health-promoting environments that support students' physical and positive mental health and school well-being through structural and organizational changes. Collaboration and Research Design Collaborators include Steno Diabetes Center Copenhagen, the Intersectoral Prevention Laboratory, and ten local communities in the West and South regions. This formalized practice and research collaboration aims to further develop the initiative in a pilot study, followed by an evaluation of its effectiveness using a controlled waitlist design. The project will generate knowledge on how, and under which circumstances, the initiative produces the desired effects, and whether national implementation is feasible. The intervention project runs for 1.5 years, with research examining impact through a controlled waitlist design involving approximately 26 classes and 500 students. Intervention classes will implement the initiative in 2025/2026, while waitlist classes will implement it in 2026/2027. Impact will be tracked through electronic student questionnaires administered at three time points: baseline (start of the school year), mid-point (before Christmas), and follow-up (before summer break). A process evaluation will assess implementation, contextual adaptation, and mechanisms of change using interviews, focus groups, observations, and surveys. Data will be analyzed and reported in scientific articles, with findings addressing the overall research objectives and refining a logic model for the initiative to support implementation in other schools.
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Social-emotional competence
Timeframe: Baseline data will be collected at the earliest 1-2 weeks after class formation and prior to the health education program; mid-intervention (Time 1) approximately 2-3 months after baseline; and follow-up (Time 2) approximately 7-8 months after baseline.
Self-efficacy
Timeframe: Baseline data will be collected at the earliest 1-2 weeks after class formation and prior to the health education program; mid-intervention (Time 1) approximately 2-3 months after baseline; and follow-up (Time 2) approximately 7-8 months after baseline.
Mental well-being
Timeframe: Baseline data will be collected at the earliest 1-2 weeks after class formation and prior to the health education program; mid-intervention (Time 1) approximately 2-3 months after baseline; and follow-up (Time 2) approximately 7-8 months after baseline.
Physical health (health literacy)
Timeframe: Baseline data will be collected at the earliest 1-2 weeks after class formation and prior to the health education program; mid-intervention (Time 1) approximately 2-3 months after baseline; and follow-up (Time 2) approximately 7-8 months after baseline.
Positive student interpersonal relations
Timeframe: Baseline data will be collected at the earliest 1-2 weeks after class formation and prior to the health education program; mid-intervention (Time 1) approximately 2-3 months after baseline; and follow-up (Time 2) approximately 7-8 months after baseline.
Positive student-teacher relations
Timeframe: Baseline data will be collected at the earliest 1-2 weeks after class formation and prior to the health education program; mid-intervention (Time 1) approximately 2-3 months after baseline; and follow-up (Time 2) approximately 7-8 months after baseline.
School connectedness
Timeframe: Baseline data will be collected at the earliest 1-2 weeks after class formation and prior to the health education program; mid-intervention (Time 1) approximately 2-3 months after baseline; and follow-up (Time 2) approximately 7-8 months after baseline.