If you are training independently, for example, your training department is called Oriental Training and her training department is called Western Training, then you will definitely suffer if she makes such an agreement. But if you do this training in her name, that is to say, you are famous for her, it is reasonable, but the commission she wants for tuition is a bit high. You can talk to her and give her some money from each student's commission. For example, every student will get15 yuan in 0 yuan in a class (you can control this amount according to the students' situation). Never give it by percentage. If you give it by percentage, the money you earn will be there. The commission is different. For example, if a student charges 100 yuan for a class, give her a class 10 yuan, and you will also give 10% of the commission. But if the price goes up and the student's tuition goes up, 200 yuan, you still give her 10 yuan according to the commission, but you give her 20 yuan according to the percentage, which means eating people without spitting bones. You can refer to me and decide according to the actual situation.