This special issue on computing education in (K-12) schools represents considerable effort by the editorial team, authors, and reviewers. It provides a series of country-specific case studies of computing education in schools that highlights the way in which curricula emerge from each country’s specific historical and cultural circumstances. As a result, not only is there much to learn from each of the case studies, but there are additional lessons in the commonalities and generalizations obtainable only by having a rich set of case studies such as these that can be viewed comparatively.