I think, if I were the head of a ballet training institution, I would divide the students into "adult classes, youth classes and children's classes", and the classes above would also be divided into elementary classes and professional classes, because each student's dance mastery is different, and it is impossible to be guided by the best students! Moreover, the junior class can't be confused with the students in the professional class, so as not to compare with each other and cause safety accidents! Strict management is needed to ensure the health and safety of students! After all, ballet is also a high-tech art, dance and sport! Wish you a happy life!