JT,
Your son's school will send a Form 1098-T. This is for information only - and not to be filed with your return.
It will itemize all academic charges and other charges, payments, grants and loans.
The school's are required to send it out no later than Jan,31.
You would use this information to follow HHH's advice.
The net amounts will also affect your tuition and fee deduction (Line 34 in Form 1040) - if applicable.
You can also research any questions by going to the IRS website.