When my parents claim me as a dependent how does that effect my return? i thought i would be getting all taxes paid back?

[VolvoGirl]

Depends how much your income is.  You can still owe tax.  And you get a lower Standard Deduction.  

The Standard Deduction for an individual for whom an exemption can be claimed on another person's tax return is limited to the greater of:

…..$1,100 or

…..Your earned income for the year + $350 (but not more than 12,950)

So you would get a minimum of $1,100.

[Critter-3]

First the SS & Medicare taxes are never refunded.  And the fed/state withholdings may or may not be fully refundable so complete the return to see how that washes out.