Seriously, in some places you can pass the exams if you have money, so now piano teachers, or those who practice piano, have to look at their skills, not by how many levels you have passed, but by how many levels you have passed. Where do your actual piano skills go? If you want to be a piano teacher, you need to learn some knowledge of music theory. If you have a certain knowledge of music theory and a certain level of piano, becoming a part-time teacher is not a problem