This study investigated the way developing, sharing and using of research-based knowledge occurred in the school-university research network of a master's programme for in-service teachers in the Netherlands. Over a 10-month period, a combination of quantitative and qualitative network data was collected. Data were analysed at three network levels: school, pairs of master's students and research supervisors, and individuals. Overall, results indicate that building knowledge productive relationships in a master's programme is a complex endeavour. Although individual master's students and research supervisors aimed for continuing knowledge processes in school and university after student's graduation, few actually did. The school context and the strategies of research supervisors provided students with too little support for sustaining the knowledge processes. This study shows from a network perspective the complexities, challenges and potential of developing partnership relationships in a master's programme between schools and universities as well as between master's students and research supervisors.