If the grandparents are paying it, they can jointly gift $22,000 to each kid ($11,000 each for GM and GF). If they give more, they must pay gift tax or utilize a portion of their unified credit.
Ah, that’s right. I forgot about the cross-gifting ability...each grandparent to each child. Thanks.
That being said, while the family says they’re making less (taxable income) than $50K/yr, they’re still being given over $40K for school tuition from if the stories about the grandparents paying the tuition are correct.