The requirement is that you attend as "at least" a half time student for "at least" any one semester that started in the tax year. Your case is unique, but you'll be fine indicating on both 1098-T's that you were "at least" a half-time student. There is no requirement to attend each college as "at least" a half time student. The requirement is that you be enrolled as "at least" a half time student in a qualified institution of higher learning. You exceed that requirement with just one school. So for your tax purposes you'll be fine indicating on the 1098-T where you only take one class, that you were enrolled "at least" half time.
I'm wondering why we don't see more of this, because I'm sure there are a fair number out there like you, who may take one class during the summer that is not at their primary college of enrollment.
