I don't know how the us schools works but the advice i can give you is that you should not to two things in the same time if it is not necessary. Because in life there is a time for study and there is a time for work, you should use your time to make some serious study then to work because later you will not have the necessary time to study.
What can studying lead me into? Jobs are getting harder to get, for ex. becoming an engineer, how much people want to become one? jobs are limited. How about becoming a teacher? the wait list for becoming a teacher is long. Doctor? Well, im not intelligent enough to become one. Thats why i want to look in the entrepreneur field and business field. Therefore having a job and getting a small income can go a long way.