The research project “Innovation Cluster for Entrepreneurship Education” ran for three years, from January 2015 to January 2018. In the centre of the project was the mini-company method. Mini-companies combine practical and theoretical learning and stimulate collaboration between school and working life. The largest mini-company scheme is provided by Junior Achievement and their Company Programme (CP). Using pre-test/post-test survey data with test and control group, combined with data from qualitative interviews, the ICEE project has given many indications on the impact of mini-companies on students and teachers, and how students, teachers and volunteers experience working with mini-companies. In addition, the project has come some way in identifying drivers and hindrances for spreading entrepreneurship education across Europe.