Do I qualify as a full time student if I was enrolled full time from August to December last year?

[kambrycazier]

I am in college and I am still currently a full-time student. I was only a part time student for the spring semester last year.

[Hal_Al]

Q. Do I qualify as a full time student if I was enrolled full time from August to December last year?

A. Yes. You meet the (parts of) 5 months rule. 

Being a full time student is not necessary for the tuition credit.  The primary purpose is for being a dependent.

There are two types of dependents, "Qualifying Children"(QC) and Other ("Qualifying Relative" in IRS parlance even though they don't have to actually be related). There is no income limit for a QC but there is an age limit, student status, a relationship test and residence test.

A child of a taxpayer can still be a “Qualifying Child” (QC) dependent, regardless of his/her income, if:

1. He is under age 19, or under 24 if a full time student for at least 5 months of the year, or is totally & permanently disabled
2. He did not provide more than 1/2 his own support. Scholarships are excluded from the support calculation
3. He lived with the parent (including temporary absences such as away at school) for more than half the year

[MinhT1]

Yes.

You are considered a full-time student if you are enrolled for the number of hours or courses that your institution considers to be full-time attendance, for at least five full or part-months in the year.

Please see this IRS document.