When schools or teachers make up lessons for students and don't give receipts for fees, informants can report the problem of arbitrary charges through "recording, video recording, witness testimony, etc." . It can also be exposed to the media, causing media interviews and evidence collection. You can also call the local mayor and report the problem of school charges.
According to the "Opinions of the the State Council State Council Office for Correctional Services and the Ministry of Education on Further Improving the Work of Controlling Arbitrary Charges in Education"
It is not allowed to hold internship classes, cram schools, "advanced classes" and "extraordinary classes" that are charged in various names.