Dr. Midlife summed it up perfectly. I'm currently in an SMP that includes a grad degree, and basically all of us were offered federal loans up to 100% of the estimated cost (as presented by the school) of attendance. This includes what the school estimates to be living expenses (housing, food, travel etc). It was like $8,000 subsidized loan (no interest until you graduate), $12,000 unsubsidized (collects interest, but you don't have to worry about payments until graduating), and the remaining up to $40,000 or so as unsubsidized GradPLUS (higher interest rate).