The ladder race belongs to Class A. In the education industry, the ladder race usually refers to a competition in which students participate, aiming at improving students' learning enthusiasm, stimulating students' interest in learning and cultivating students' comprehensive quality. The administrative department of education usually divides it into Class A activities as an educational and teaching activity of the school. This kind of activity usually has corresponding organization, planning and guidance, and also has certain indicators for evaluation and assessment. Because the specific form and scale of the ladder race may be different, the specific classification may vary from region to region and school. Therefore, if you want to determine the specific category, it is best to consult the relevant local education policies and school regulations.