SJSinNYC:
So where does it stop? What happens if the great-grandparents want to take the family on a vacation? A rich uncle? Is that allowed? Or do we say that the family should forgo the vacation on principle? Don’t forget that benefactors in question might not offer to pay the tuition instead.
I guess the question I am asking is where do we draw the line? If a complete stranger hands over tickets to someone taking tuition assistance does the person need to reject the gift out of principle?
Also, can you please show me the source where it says that the grandparents are obligated to teach their grandsons Torah?