OSOS was the first project that introduced the concept of open schooling, where schools, in cooperation with other stakeholders, can become an agent of community well-being. An open school is an engaging environment for science learning and makes a vital contribution to the community: student science projects meet real needs in the community outside school and draw upon local expertise and experience. Learning in and together with the real world creates more meaning and more motivation for learners and teachers. Such an environment fosters collaboration, mentoring, and provides opportunities for learners and teachers to co-design the future of learning. Applying the OSOS approach in local settings the last two years has made it clear that schools have much to gain by fostering connections between formal and informal science learning, between existing providers of education and new entrants. The OSOS approach has supported (and will continue to do so) the transformation of more than 1200 schools into open schooling environments in 15 countries. The A tailored package of supporting materials, including the OSOS Self‐Reflection tool and the Open School Development Plan, have been developed to support schools as they transform into Open Schooling Hubs, offering a clear mentoring approach to schools with a vision for the future. The OSOS School Hubs created communities of practice to implement their innovative projects, involving numerous schools that progressively also adopt the open school culture. OSOS has demonstrated at scale the process of transforming schools to innovative ecosystems (significant growth on their openness was observed), acting as shared sites of science learning for which school-heads, teachers, students, and the local community share responsibility, over which they share authority, and from which they all benefit through the increase of their communities’ science capital and the development of responsible citizenship. As an overall result, the adoption of the open schooling culture documented in the participating schools is strongly related with a significant increase in students’ interest and motivation in science.