Urika: Looks like you have to file as nonresident aliens 1040NR, if you are returning home after finishing  and if you use 1040 ez, irs would not know your status and will be accepted.
While filing 1040 NR it will not give you standard deduction therefore the refund will be low. I had known a student using Itemize deduction and lowering the taxable income and getting more refund. Do some research what you can itemize.

Deepocean: Just saying1099 does not provide what you have to do? 1099 is used for various purposes and the box number checked or has the dollar amount matters. 1099 G mean if you have received refund in 2013 and your tax filing software will ask this info and you will put the dollar amount , later it will ask did you itmize or standard deduction , once you choose the one you have used, it will tell you whether it is taxable or not.
Bottom line is when you have used standard deduction : state tax refund is not taxable.
If your stock value is down: there is nothing to do with filing taxes unless you sell it or it turns to  a worthless stock. I mean when you sell it then the loss or the gain must report for the tax year your are filing your tax.  Swing by library or post office and grab an instruction book 1040 Ez or 1040 whatever you have used in 2013. Read it and it will give you first-hand information. Much more reliable than ours.

There are lot other tax preparing software: may be free or 9.99. Have you heard State  Montana is not accepting Turbo tax software?