You  can claim him as a dependent, you may claim him for Head of Household (HoH) filing status.

 If he does not qualify as a dependent; he is  also not a qualifying person for HoH.

Why Haven’t parents Been Told These Facts

1. If he/she was a student (under 24) for at least 5 months and lived with you for more than half the year, and did not provide more than 1/2 his own support for the whole year, you can still claim him. Be sure he knows you’re claiming him, so he doesn’t claim himself. He can only be claimed once. But, he can “file taxes” without claiming his own exemption. (Xanax)
2. You should be able to claim the child as a dependent under the Qualifying Child rules if the child was a full time student for any portion of 5 months during the year and also meets the other requirements under the rules.  
3. Then you should be able to have Head of Household filing status if you are Single or considered unmarried by not living with your spouse at any time in the last six months of the year and meet the other requirements for Head of Household.

You can find more information on this by Visiting our office to talk to our Generational wealth specialist.