There's always the option of sucide - pretty tragic, but dept ammounts to all kinds of additional pressures.
The correct way to do this is to first consolidate your loan under your own name, so your parent, loved ones, or whomever the co-signer won't be ones trapped with the debt.
However, in order to place the loan under your own name, you'd have to first make consecutive payments to show you are able to pay off the loan w/o the co-signer. This means you'd need to have a job with steady income first; something difficult to do for the debt-laden grads in the first place.