Ask the school if they consider the $4,400 they paid to be a scholarship/grant/fellowship, yes or no.
If no, ask the school if they consider the $4,400 they paid to be wages for services performed, yes or no.
If no, ask the school how the heck they classify the $4,400 that they gave to your son.
The first two questions are straightforward and should be easy to answer. If you get to the third question, all bets are off.