 I'm Dave Ramsey, and you're listening to The Dave Ramsey Show on WRHI 100.1 FM. You know, it doesn't take a degree in statistics to realize this one stinks. Ninety-three percent of undergraduate private student loans are co-signed. So when you're delinquent and drowning, Mom or Papa or Uncle Joe is stuck in that financial stress along with you. But there is a way out. Why refi?