You must check the box that says you can be claimed as a dependent if you can be claimed, even if you don't want to.
You can be claimed if you lived with your parents more than half the year, and did not provide more than half your own support.
For the support test, money you spent on your own support (from earnings or savings) counts, as does student loans in your name. Support provided by your parents includes the value of the home they provide you (value of rental or rental equivalent, food, share of utilities, etc.)
For the "lived with" test, you are deemed to live with your parents if you are away temporarily, assuming that you would have lived there and that it is reasonable that you would move back after the temporary absence. College is generally considered a temporary absence and most college students "live with" their parents for tax purposes. There is no black line rule for determining when you no longer "live with" your parents and are no longer "temporarily away" at school, but living independently. It depends on the facts and circumstances of each case.
Also note that the tax benefits for an 18 year old with 10K of income will not be large, the America Opportunity Credit is quite limited for students who have little earned income, and you don't qualify if your parents are alive and you provided less than half your own support (even if you do meet the residency test.)
If your parents claim you as a dependent and you do not check the box for being a dependent, the IRS will investigate both sides.
