How many levels of hard pen can be a teacher?

Elementary. Hard-pen calligraphy grade certificate is divided into three grades: junior, middle and senior, and different grades of certificates represent different teaching levels and abilities. Primary certificate holders can engage in children's hard pen calligraphy teaching in kindergartens, primary schools and other institutions; Intermediate certificate holders can engage in relevant teaching work in middle schools and training institutions; Holders of advanced certificates can engage in teaching in universities, art colleges and other institutions of higher education.