How to write the basis for charging education and training institutions?

Education and training institutions charge according to the number of students and class hours.

Fees for education and training institutions: 70 yuan charges 10 students per class, and 50 yuan charges 1 1-20 students per class. The specific charging standard of training institutions can be increased by 10% on the basis of the benchmark charging standard, and there is no limit to the downward adjustment.