What does badminton match mean?

Groups A, B and C of badminton competition are grouped according to the qualifications and achievements of the contestants. Group A is a group of students who passed the pure college entrance examination and entered undergraduate colleges without extra points in physical education. Group B is a group of students who didn't get extra points in physical education, but only entered higher vocational colleges through the pure college entrance examination. Group C is generally high-level college athletes admitted to colleges and universities through special and individual sports, as well as students from sports colleges and majors.