what study abroad costs are eligble to be paid with 529 funds

<p>I DS's current university, we can use 529 funds for tuition and fees, room and boards, and books. Does anyone have experience paying for a study abroad year using 529 funds? DS's program is run through the university and he pays normal in-state tuition, but for room and board only estimates are provided and I believe may be handled privately. I have no idea about the actual program fee, what if any allowance can be made for food since I don't think there is a meal plan, and airfare to the overseas university. Any thoughts?</p>