“Part-time jobs are not the same as work-study jobs…(part-time job) income will affect your financial aid eligibility when you fill out your FAFSA.”
Also, you will not pay FICA tax on work-study income. So you will have more take-home income than regular part-time job.
https://www.campusexplorer.com/college-advice-tips/5932AC13/How-Work-Study-Affects-Your-Taxes/