private tuitions undermine school teaching, instead of focusing on learning they just focused on passing the tests. Most of the teachers in private tuition are in fact from schools/colleges itself who end up neglect teaching in school class and instead start up their own tuitions as business to make more money. In short a student is paying twice once for school and another for tuition, it is double the financial burden.
Worse is that these tuitions are often run by teachers who go on to set exam paper ( even though paper is randomly ) it still gives certain students a big advantage. It is just a subversion of regular education system without overtly indulging in corruption.
Okay. But this is different from why China banned it. For them, it's about the expenses associated with private coaching in order to keep their only child competitive with their peers and the fact that the average Chinese is not able to afford anything more than 1 child due to such expenses. Banning expensive for-profit coaching would result in a level playing field between the haves and the have-nots, encouraging the average urban Chinese to have more children, especially now that they have lifted population control curbs.
Anyway the drawback with this move is the quality of the education itself will fall. So we shouldn't be joining in line to remove private tutorials. Rather we need to remove the end-of-term exams during school years and replace it with a series of tests throughout the term. And when the students transition to higher education, we need to bring in a common nationwide test based on the MCQ pattern. Basically the system the Americans have. This will eliminate rote memorization and bring in more a creative process to education, and private tutorials can help even more effectively with this transition. The goal isn't to fill a student's head with useless information, it's all about building the student's foundation so they can learn on their own in the future.