1 First of all, according to the number of students, 10 students will be in 45 yuan after work/one class hour, 10-35 students (inclusive) will be in 35 yuan/one class hour.

Secondly, the fees are charged according to the teachers. Standard teacher price 100- 150 yuan, intermediate teacher price 150-200 yuan and senior teacher price 200-250 yuan.

3. Finally, fees will be charged according to the improvement of students' grades. The greater the improvement of students' grades, the higher the fees.