The Open Schools for Open Societies (OSOS) project has been running since 2017. It started as a Horizon 2020 CSA project and it has managed to bring together thousands of schools and teachers around Europe. To be more exact, the OSOS Portal now host 1168 Schools, 2206 Teachers, 1157 Innovative Projects, 114 Communities and 68 Accelerators. KROS is one of these 68 Accelerators. An OSOS Accelerator is a best practice on which innovate projects can be based on. It’s main function is to provide European Teachers with innovative ways to explore the world: not simply to automate learning plans but to inspire, to engage and to connect with other schools, teachers and students around the world. It supports therefore, the development of innovative and creative projects and other educational activities.