How can I get rid of my private student loan and switch to a federal loan with a lower interest rate?

I have a total of about $27,000 in private student loans through Sallie Mae with a 9% interest rate . Is it possible to find a federal loan to cover the previous amount I've borrowed and close my Sallie Mae account? I am still in school (I'm a junior) at the University of Minnesota and will need another... show more I have a total of about $27,000 in private student loans through Sallie Mae with a 9% interest rate . Is it possible to find a federal loan to cover the previous amount I've borrowed and close my Sallie Mae account? I am still in school (I'm a junior) at the University of Minnesota and will need another year of financial aid..
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