http://www.sfsu.edu/~oip/Taxes/faqs.htm
2. I'm an F-1 student and I had no U.S. income during 2006, or my only U.S. income was bank interest. Do I need to file any tax forms?
Yes. You need to file Form 8843. This is the only form you will need to complete. F-1 students with U.S. income from other sources, such as dividend income, salary or wages, scholarships or fellowships, prizes or awards will need to file form 1040NR or 1040NR EZ.
About interest from Bank:不用報銀行利息如果你沒住滿5年(5年當中有出過國不算住滿5年)
International students who have been continuously in F-1 status for five years or less (entered the U.S as F-1 in 2002 or later) generally file income tax forms as non-residents, and are usually not required to report interest as earnings, although dividend income MUST be reported.