The articles in this issue all provide important contributions towards meeting SDG4. They highlight the role of informal learning (Kidu), community development (Pascevicius & Hodgkins-Williams), Open Educational Resources (OER) and teacher professional development (Haβler, Hennessy & Hofmann). The importance of appropriate policies and governance are highlighted (Mukama); and, as always, all efforts will need strong leadership to guide developments (Torres & Rama).