It is still possible to achieve balanced placement by banning placement examinations. In addition to the need to balance students according to gender when kindergarten is promoted to grade one, when primary school is promoted to junior high school and junior high school is promoted to junior high school, the enrollment school only needs to conduct a comprehensive survey of students' academic performance in primary school and junior high school, and can basically grasp the real learning level of each student by referring to the results of students' primary school graduation examination and senior high school entrance examination. Then divide classes according to this, and the results of each class can be basically balanced.