This book constitutes the refereed post-conference proceedings of the IFIP TC 3 Open Conference on Computers in Education, OCCE 2020, held in Mumbai, India, in January 2020. The 11 full papers and 4 short papers included in this volume were carefully reviewed and selected  from 57 submissions. The papers discuss key emerging topics and evolving practices in the area of educational computing research. They are organized in the following topical sections: computing education; learners' and teachers' perspectives; teacher professional development; the industry perspective; and further aspects.