1. The total amount of knowledge within primary education is limited. 2. Tutoring schools are not extending students knowledge, it simply intensify the competition by giving students extra pratices and instruction so they can make money from it. 3. Students are not benefit from it, as theirs absolute ranking stay unchanged, if not decrease because their family cannot afford tutoring. 4. Will it immediately alleviates the pressure and anxiety for parents? No, as long as the supply of desired works limited. And the overall social efficiency unchanged. But it does try to solve the immediate problem of out of control involution in the competition and maybe do some good for students.