I don't think you have officially joined the work. After you formally take part in the work, you should feel the same way no matter what you do. The boss will never give you more money than you do. More often, he will give you less, but ask for more. You just pay, sit in class and feel that the other person is paying to tutor you. But what you can't see behind it is that he has to face the pressure of leaders, the competition among colleagues, and the responsibility of tutoring you. As far as class is concerned, he needs to prepare materials, make plans according to your situation and so on. And the working hours are far more than dozens of minutes in class. No matter how much you pay, it doesn't necessarily go into his pocket.

So, cherish your school days.