Get on your SL's website and see if there is anymore discounts you are eligible for-, Automatic payments, # of ontime payments, ect
Have you already consolidated? Are these loans a Fixed or variable APR?
The graduated payments program is only good for 2 or 3 years and are essentaily interest only payments.
I am actually on a graduated payments program right now- but am paying 3X of the min and have it on auto pay(.25% interest discount)