Should I write 0 or 1 on my W-4 form?

Claiming -0- will kill your check. Claiming 1 will give you more money every week. Claiming married and -0- will take less out of your check. You will have only about 700 dollars in taxable income unless you can be claimed as a dependent by your parents. Claim 1 if you can be claimed as a dependent 2 if you can not.