University students have comparably low levels of wellbeing but it can be difficult to access this population with ongoing interventions. The University Wellbeing Programme uses positive psychology interventions integrated into university psychology classes. The intervention served the dual purpose of providing students with practice assessing intervention’s efficacy, while also increasing their wellbeing. The programme includes in-class and take-home activities to target positive emotions, and eudaimonic wellbeing. In the first study, 94 students participated in the University Wellbeing Programme which led to significant increases in wellbeing which were maintained at follow up. There were clinically significant improvements in mental health status among a portion of students and those who undertook activities more frequently benefited more. We conducted a direct replication in Study 2 with 129 students and replicated the significant increase in students’ wellbeing. In Study 3 we compared the intervention to an active control group who were undertaking a different university subject and found those in the University Wellbeing Programme experienced greater increases in wellbeing. By incorporating the intervention into class time, there was very little attrition and students were able to receive benefits without taking on additional activities. This research can inform the incorporation of interventions into university classes.