Plenty, considering that plain old interest rates rarely tell you the whole truth. (freemoneyfinance.com)
The interest rate on the new, consolidated loan will be the weighted average of the old loans» rates, so no money savings will accrue to the borrower, although the rate can not be higher than the highest old interest rate. (usstudentloancenter.org)
Your new interest rate will be a weighted average of your old interest rates (meaning the higher interest rate will be given the most weight) and is not subject to change. (finder.com)