So he meets the age, school and residency test, you just have to answer support. His support includes a share of your rent or mortgage, utilities, food for the 8 months he lived in your home. Medical expenses, clothing, entertainment, tuition, books, vehicle. Support he provided for himself includes money he spends on his own support, whether from his earnings or savings. If he earned money but did not spend it on himself (saved it, spent it on child support) that does not count as providing his own support.
As long as he paid less than half his own support for the whole year, you can claim him as a dependent, because he meets the other tests.
