I want to know how American students spend money from their part-time jobs?

If someone has a part-time job it typically means that they have other things in their lives that require a large amount of time. for example, school, kids, or extra curricular activities. they are most likely going to spend the money that the make at their part-time job on school, for their kids, or on other activities. some might even put it in the bank for later use. It is honestly up to that person to do whatever they want to do with it.