The cost of one-on-one education is much higher than that of large classes. After all, the cost borne by one teacher is definitely different from that borne by a group of people. However, one-to-one mode is definitely more suitable for students than one-to-many mode. Teachers can systematically review according to students' personal conditions, and different students use different methods to achieve the effect of checking and filling gaps. At present, one-on-one lectures and experience classes are generally around 300/ hour, and different institutions also have different charging standards.