I have F1 visa and my wife has F2, both non-resident. My university had a program to help students do their taxes. So they helped me (using their software) to fill and print forms, one of which is 1080NR.

Now, I was just about to post the forms, but I noticed that in the `Filling Status` section for both me and my wife ```Other single nonresident alien``` is checked. 

I'm not sure whether this is correct. Aren't we technically ```Other married nonresident alien```? 
When filling the forms the person actually asked something from his superior and she said ```they have to fill separately```. But does this mean that we have to choose ```Other single nonresident alien```s?


Your help is highly appreciated,