HAPPEN is a primary school network in Wales which brings together education, health, and research in line with the new curriculum proposals for health and wellbeing.

All pupils in years 4, 5, and 6 can complete the HAPPEN survey: a health and wellbeing questionnaire focused on physical and mental health.

HAPPEN has been collecting data since 2016 and has more than 35,000 responses from children across Wales. Of this number, 35% are duplicate entries from children at different time points. There are more than 500 schools registered to take part in HAPPEN.

Schools can take part in the HAPPEN survey throughout the academic year to provide snapshots, track change, and evaluate practice. Having completed the survey, schools receive an individual school report aligned with the new curriculum showing the overall picture of health and wellbeing in the school. HAPPEN was co-developed following interviews with headteachers who called for a better understanding of school needs in the development of health interventions and advocated for a more collaborative approach to improving child health through schools.