Abstract Issue/problem There has been an increase in mental health issues among young people in Norway in recent years, as in other European countries. This seems to result in more school anxiety and school absence across different school contexts. To meet this challenge, health promotion theory has been applied to develop practices facilitating mastering and empowerment in school. Description of the problem The objective of the project has been to develop health promoting principles and practices that support students to thrive and learn in school. Six primary schools, two lower secondary schools, one upper secondary school and five adult learning centres have participated in workshops and discussions for a period of a year. The questions that this project aims to answer are: 1) How can teachers facilitate health promotion in school? 2) How can health promoting practices support school attendance? Results The following principles for health promotion in schools were developed: 1) acknowledging by seeing the whole person, 2) trusting each individual, 3) respecting by creating tolerance for differences, 4) facilitating mastery and achievement, 5) facilitating participation by letting students develop ownership to solutions, 6) creating safety through clear and predictable frameworks, 7) facilitating motivation through engagement, 8) building relations by meeting students where they are, 9) promoting significant values. Lessons Based on the operationalisation of health promotion in this project, it is recommended that school employees promote and facilitate acknowledgement, trust, respect, mastery, participation, safety, motivation, relations, and values. The health promoting principles developed may easily be transferred to other educational contexts with similar challenges. Key messages • It is important to create an acknowledging and respectful learning environment to facilitate health promotion in schools. • To support school attendance, the environment needs to be supportive of student participation and empowerment.