bb5f2b3b__Alternative_Loans_Information__Alternative_Loan
[0] Loan Interest Rate [Parent Plus Loan] Fixed at 6.41% [Alternative Loan] 
Variable, usually no cap. Many programs reset quarterly. Varies from lender to lender. Usually based on a consumer index(prime, commercial paper, LIBOR, etc.) plus a margin. Some lender also offer a fixed rate loan.
Plus Loans Vs Alternative Loans Information
Alternative Loan