Strictly speaking, it also belongs, because calligraphy class also belongs to some courses in the school. The policy of double reduction stipulates that extracurricular training institutions shall not provide subject counseling services for primary and secondary school students on holidays, weekends, winter and summer vacations. However, calligraphy belongs to the category of quality education and is encouraged by the state. If you don't take up too much extra-curricular time, it may not be within the jurisdiction of the double reduction policy. Generally, it is enough to arrange 1-2 calligraphy classes a week, and the rest of the time is mainly self-practice without heavy burden.