For statistical, billing, and veteran certification purposes, a
full-time student is defined as one who is taking 9 or more credits.
Those taking less than 9 credits are part-time students. All courses,
including those taken not-for-credit, are counted in computing the
credits taken, except for VA certification. In Summer Session, a credit
load of 4.5 or more credits is considered full time.
If you are looking for a full-time credit determination for loan purposes, be sure to check with your loan carrier as well.