Training institutions should be responsible for learning.
If the contract is a teacher's contract, you can sue the director for violating the contract law, but you will have a hard time in this unit in the future. Either you discuss with the director and decide not to be a student manager, or you can still hold this position, but you can help introduce students, but you don't have to pay commission, but you don't have the required performance every month. You are trying to win over your own students.