Thanks, abezon.
Here is what confused me. I read in the publication under the gross income test that there is an Exception for a person who is your child and a full time student under 24. The gross income test does not apply but other dependency test must still be met. Your child, for purposes of the gross income test, must be your child, stepchild, adopted child, or a foster child who was a member of your household for the entire year. My confusion is that I don't see grandchild. Can you confirm?