There is true that apple has 200 GB fee for students and teachers

Yes it is true, students and teachers can get 200GB of storage if the school set up the devices with federated authentication. To find out more visit this web site. https://www.apple.com/education/k12/it/ information is under #3.

Only for Apple IDs managed and issued by the school. All other Apple IDs are subject to the standard limitations and pricing structure.