Why don't some schools require students to fill in the volunteers for the senior high school entrance examination?

Some schools in the senior high school entrance examination did not require students to fill in their volunteers because they adopted other enrollment methods. For example, draw lots or assign schools to students directly according to the location of their student status. The specific enrollment methods adopted by schools vary according to regions, policies and the school's own situation. The senior high school entrance examination refers to the junior high school graduation examination, also known as the junior high school entrance examination, which is an important examination in China's education system.