Caveat emptor: This information may be out-of-date.

As a student, you are allowed to work 20 hours per week on-campus.  So, at around $8.50/hr pre-tax you can calculate how much you can bring in per week/month/year.

During the summer, you can work as many hours as you can, but only on-campus.  But lot of students do work outside, at OC for eg., long hours and do make as much as $10K during the summer.  The latter is frowned upon by the authorities and can cause legal problems.  You have to weigh the risk vs. reward/need.