Of course you can extract it. Of course, you can't use it yourself. You must use it in your own class. For example, fruit snacks on holidays, or enough money to organize everyone to go for a spring outing or an autumn outing.
Also, I believe you will print a lot of materials, and you can also print them with class fees.
There are many ways and means, no matter what it is, as long as it serves the class, it is good to use it in practice.