Certainly not! Neither do you have to be tournament champion or a security guard. Some of the top MA school owners today began teaching as Blue Belts. There are an awful lot of misconceptions about what a Black Belt is and this is compounded by the fact that there are vastly different requirements for different associations. Some associations include teaching training modules within their syllabus up to Black Belt- most do not. Therefore gaining a Black Belt is not a qualification for teaching. It means one has reached a certain personal standard, it does not mean one has developed great communication skills,although the training may have helped, it was not the focus: teacher training focuses on communication skills. Often the best athletes make the worst teachers (and football managers), because they do not understand the difficulties and special needs of the average student.