They are over the age of 18. I believe the guardianship issue boat has sailed. They would have needed to be in legal guardianship prior to age 18.
Tax filing status doesn’t matter…at all.
Your financial information will be what your kids need to provide…even if residing with grandma. The older one has done so…you said.
So what is the issue?
And what “limit for FAFSA” for income are you talking about?
Bottom line…they can’t use grandma even if she IS their legal guardian. When kids are in legal guardianship (but I think this has to be established prior to age 18…@kelsmom??) they would be independent for financial aid purposes.
Do their colleges guarantee to meet full need fo all accepted students? If not…this financial tap dance you want to do might make no difference at all in their need based financial aid awards.