Interest in how to promote student wellbeing in schools is growing. Research shows that some drivers of wellbeing are universal, but others are country-specific. No prior study has investigated this question in the United Arab Emirates (UAE), where geographic, socio-demographic and school type differences in student wellbeing are substantial. We address this gap by using multilevel regression to analyse data from the PISA 2018 study. Our focus is on life satisfaction, positive affect, negative affect, meaning and purpose in life, and mental health symptoms of internalizing difficulties. We find large school effects on student wellbeing, the second largest school effects out of 56 countries. School resources are of little importance, whereas factors related to time use, social connections, health and body image, positive school climate, and feelings around school and education are important correlates. These factors help explain a substantial part of the wellbeing inequalities observed across types of schools in the UAE.