What is your question about filing as head of household? You didn't finish your sentence. What is the reason that you want to file as head of household?
To file as head of household you must meet all of the following requirements.
1. You are unmarried or considered unmarried on the last day of the year.
2. You paid more than half the cost of keeping up a home for the year.
3. A qualifying person lived with you in the home for more than half the year (except for temporary absences, such as school). However, if the qualifying person is your dependent parent, he or she doesn't have to live with you.
See "Head of Household" in IRS Publication 501 for more details.
