One-on-one tutoring means one teacher and one child, and small class tutoring means one teacher corresponds to several children. In terms of learning effect, it must be one-on-one. Small class tutors can't take care of a student's learning progress by themselves, but one-on-one tutoring can. One-on-one tutoring can be targeted according to children's weaknesses, and the prices vary widely. For example, I enrolled my children in offline small class teaching, and the effect was actually very bad. Children are afraid to ask questions, teachers can't find them in time, and the price is more expensive. Finally, I searched a platform called one-on-one tutoring in the mobile phone application market, and the price was less than half of the offline. The average cost of a class is less than that of 70 yuan. With 30 class hours in a semester, teachers are more responsible and targeted, and their math scores increased by 654,300 last semester. I'm glad you can accept my answer.