Your son must be your dependent in order for you to claim the American opportunity tax credit (AOTC). Be advised there is an income limit for you ($90K, $180K married).
In TurboTax (TT), enter at:
Federal Taxes Tab (Personal for H&B version)
Deductions & Credits
-Scroll down to:
--Education
--Education Expenses and Scholarships (1098-T)
