Hopefully this will shed some light: If someone is paying rent, utility bills, etc., for you while you attend school, include the amount of that person’s contributions, unless the person is your parent whose information is reported on this application. Include money that you received from a parent whose financial information is not reported on this form and that is not part of a legal child support agreement.
Tip: This includes distributions to you (the student beneficiary) from a 529 plan that is
owned by someone other than you or your parents or non-custodial parents (such as your
grandparents, aunts, and uncles).
While the wording obviously doesn’t give every definition of the idea of “support,” tuition paid on behalf of the child would be just like another bill that is paid. I believe it needs to be included.