The school I attend requires school aged students (K-12) to have a grade of C or better in all classes in order to participate and test. Black Belts are required to have a B or better. Do any other schools have this requirement? Personally, I like it because I have three kids in TKD and they know they need to keep their grades up. B and better students (for the entire school year) get a small eagle for the back of their dobok. Straight A students for the entire school year get a large eagle. Most of out students get one of the eagles.