ok....i'm confused so is it better to pay interest while in school?
I've mentioned some reasons to not pay. LDPYYKM mentioned some reasons to pay.
Not every situation is the same because everyone is taking of differing amounts of debt, already have differing amounts of preexisting (UG, car, credit card) debt, and have different potential incomes while in school.
If you have no savings and no source of income, in my opinion, you should not make interest payments. Once you have established some savings, you can then consider whether interest payments makes sense for you. This goes back to the 'Can you afford it?' question.
There's another issue that hasn't really been mentioned explicitly; some people make all of the financial decisions based entirely on what will cost them less, while others are willing to pay a bit of a premium for less tangible benefits like financial flexibility.
Establishing some savings in an intangible benefit that will cost some money in the long run (see me example above). To me that flexibility is worth the extra cost.
If you are really having a hard time figuring out whether paying the interest while in school makes sense for you, I think that you should contact to professional financial adviser that can go over in detail your particular situation.