As far as I know there is no way to transfer your OWN money from Nepal to US. For a student, you need letter from Education ministry together with your I-20, and you need to submit that letter to Nepal Rastriya Bank. And this is also a very limited amount of money.

You can not transfer your OWN money from bank in Nepal to US. This is the F*$&$ed up lesson that I learned few months ago. Thats how desperate our country is.

Goodluck.