It depends on what tax attribute you're trying to claim. For the purpose of your parent being able to claim you as a dependent, under the "Qualifying Child" rules, they cannot, because you did not meet the 5 month rule (they might still be able to claim you under the qualifying relative rules, but that has a $4300 income test).
As far as your being able to claim a tuition credit, you were a fulltime student for one term, so you qualify. There is no 5 month rule for that.