According to the Swedish Education Act, schools in Sweden must provide comprehensive student health services to foster an inclusive and conducive learning environment, promoting students’ well-being and knowledge development. As part of a multi-professional team, school counsellors are essential in achieving these goals. However, national guidance lacks details on the role of school counsellors in health promotion, prevention and remedial efforts. This study addresses this knowledge gap by examining aspects of school counsellors’ professional work using theories of professions. Open-ended answers in a survey distributed to school counsellors in Sweden were analysed through content analysis. Findings show that remedial work primarily focuses on individual students’ social issues through conversation-based interventions. Preventive work targets groups and the broader school environment, often involving tasks like policy development. Health promotion work stands out with its educational component, where school counsellors are involved in Life Competence Education, often in collaboration with other school professionals.