In the XXXX of 2014 my grandson applied for a {$8500.00} student loan from Sallie Mae. He asked me to co-sign the loan. I was reluctant to do so, but finally did. The reason for the reluctance was the interest being charged ( 8.5 % ADJUSTABLE ) when interest rates elsewhere were 2 to 3 % and fixed. I checked my credit report and determined I had a very high number. I am a XXXX year old veteran and a retired XXXX from XXXX XXXX. I have always paid my mortgage, car payments, and all other payments on time. I called Sallie Mae and complained to them about the interest rate. They said " It was determined by their computer ''. I believe that is hogwash! I have complained in emails to several government agencies and have never received a response. I think Sallie Mae is taking advantage of students needing loans for their college education. My grandson will be a XXXX this XXXX and is doing good in his school at XXXX XXXX. I would appreciate you looking into this to determine if Sallie Mae is charging unacceptable interest rates for its student loans.