There were other requests to change the requirements since the muggle subjects were introduced and they had passed. The last change came from Lucius as chief warlock and head governor: "I am also requesting that the graduates, who wants to become teachers in Hogwarts and the primary school teachers should have A-levels in Child Development, Psychology and Sociology. Apart from that the education of becoming a teacher in Hogwarts and the primary school should be separated, because the teachers in the primary school should be educated to teach everything from English, Math, Subject teaching, Music, Arts, Physical Education and Technical and Textile Work and how to deal with the younger children appropriately. The education of Hogwarts’ teachers was only dependant on the mastery that they gain in their chosen field, but if the graduates want to teach a muggle subject, then they are required to choose minimal two subjects, but maximal four to achieve their mastery."