Get your taxes done using TurboTax

How much income did you receive in 2016?

Did they pay for over 50% of your support (housing, food, college, etc.)?
<a rel="nofollow" target="_blank" href="https://apps.irs.gov/app/vita/content/globalmedia/teacher/worksheet_for_determining_support_4012.pdf...>

Why are you so concerned about them claiming you as a dependent?

For FAFSA purposes, you are considered "independent".  However, that is completely different than tax dependency.