Tax deduction on Educational loan to a friend?

One of my friends is doing his Masters in US. I was planning to lend him some money to pay his fees. He also plans to return the money after he graduates with an interest rate. But I have some questions about that. Will I be eligible for tax deduction on the money I lend him? Is the interest that he pays to me taxable? If so, what kind of doent do I need to show my interest income from my friend? Are there any other complications that I should be aware of? Any do's or don'ts?