  While functionality and correctness of code has traditionally been the main
focus of computing educators, quality aspects of code are getting increasingly
more attention. High-quality code contributes to the maintainability of
software systems, and should therefore be a central aspect of computing
education. We have conducted a systematic mapping study to give a broad
overview of the research conducted in the field of code quality in an
educational context. The study investigates paper characteristics, topics,
research methods, and the targeted programming languages. We found 195
publications (1976-2022) on the topic in multiple databases, which we
systematically coded to answer the research questions. This paper reports on
the results and identifies developments, trends, and new opportunities for
research in the field of code quality in computing education.
