best way to repay consolidated college loans

I believe my son is paying a minimum amount for repayment.
How can he pay more toward the principal and pay off sooner at a savings?

Terry Says:  Oh absolutely he can pay more than the minimum.  And if you want to help, you can also make a payment toward his student loans if he gives you the loan payoff info.  This is a huge burden for college grads, and the interest costs eventually more than double the repayment cost of the loan!