The 17 full papers presented together with 1 invited talk were carefully reviewed and selected from 50 submissions. The focus of the conference was on following topics: sustainable education in informatics for pupils of all ages; connecting informatics lessons to the students’ everyday lives; teacher education in informatics or computer science; and research on informatics or computer science in schools (empirical/qualitative/quantitative/theory building/research methods/comparative studies/transferability of methods and results from other disciplines).