Must I apply for classes in hard pen calligraphy before school?

Is it necessary for the children in that big class to enroll in the calligraphy practice interest class?

What about the children in the big class?

He is a preschool student and needs to master this pen-holding posture, which is a foundation for writing well. Therefore, it is helpful for children to sign up for this writing interest class, which is helpful to exercise their pen-holding posture and make their writing standardized and regular.