The calligraphy training center of Shanghai Haipai Painting and Calligraphy Art Museum is jointly organized and implemented by Shanghai Calligraphers Association and the training department of Shanghai Calligraphers Examination Center, with famous experts and professors of Shanghai Calligraphers Association as lecturers. Every year, the school organizes students to take the grade examination according to the requirements of China Book Association Marking Center, and the passing rate of the grade examination is 95%. Where did my friends' children register?