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I think you'll be in the clear on this. As a foreign student you would probably have a student visa and you might not even be allowed to work, aside from under the terms of any assistantship you might have. They wouldn't expect you to file taxes if this was the case. I would check with US Immigration or whomever issues those visas, and find out what the law is regarding work under a student visa. As it stands, the IRS might not be expecting you to work, and therefore can't expect you to file.

EDIT: Basically, the IRS taxes income, not holdings of foreigners. If you were asked any questions about it, tell them it's savings or a trust fund, and it's not US income. They can't tax you on it if they can't prove you made that money in the USA.

NT