If your dad claims you as a dependent, then you can't claim yourself on your exemptions. That means you wouldn't be able to get your standard deduction to your tax rate, and you'll have to pay even more in taxes than you are now. You also have to be living in his house for 6 or more months out of this previous year for him to be able to list you as a dependent.
You'll have to compare how the math works out honestly. With you claiming yourself as an exemption your deduction would be $5350, your father claiming you as a dependent would get a deduction of about $3000 if I remember right (haven't done my taxes yet this year). You can try using
this calculator I found to crunch the numbers, though of course I give no guarantees to its veracity. Otherwise you could always go to a professional tax preparer to have the math done; remember that what you pay to have your taxes done can also be claimed as a deduction if you do itemized deductions.