About Visa in USA
Gain a visa for the USA - Forum
I do not know your circumstances and these are of upmost importance when it comes to visas, especially for the USA. It mainly depends upon where you come from, for what reason, and how long, you want to be in the USA.
I woul dsuggest that you contact the school that you are interested in studying or contact your local USA embassy. they can assist you in finding the information you need.