European Union-funded Horizon 2020 project managers have teamed up to offer a free online summer school that took place in the mornings of 13, 20 and 27 July and 3 August. The challenge was organized by Rubizmo project solvers and the remaining projects involved were Ruritage, Ruralization, Liverur and PoliRural. All focus on rural development, rural attractiveness, tourism and heritage development.