The information society requires new skills and knowledge about how to cope in a computerized world. Although it is fully assumed in the political and social discourse, it is a neglected subject in formal education. Each nation should analyze how computing is learned in its K-12 education system. This research-to-practice paper presents the report carried out in Spain promoted by two academic associations, which analyzes the state of computing education in Spain in K-12 studies, summarizes some elements of the didactics of computing and analyzes the training received by teachers who will train K-12 students. The report also presents some reflections of the working group in charge, and nine proposals for improvement oriented to policy makers are pointed out.