Arriving and Studying in the U.S
The USA immigration low regulates the entry, the stay, the departure from the US territory of all categories of persons, including the students from other countries and participants of exchange programs.
The Department of Homeland Security (DHS) is the agency responsible for ensuring that these visitors comply with U.S. law and regulations. Everyone, who arrives in the United States, will come under the authority of the Department of Homeland Security, and one of the three units within DHS responsible for non-U.S. citizens: the Bureau of Customs and Border Protection; the Bureau of Immigration and Customs Enforcement; and the U.S. Citizenship and Immigration Services Bureau.
When you arrive in the U.S., you will receive a Form I-94 (Arrival-Departure Record) that includes official records about your stay in the territory of the USA. You should keep this form and send it to the officials after your departure.
If during your stay in the territory of the USA you have to change the category of your visa, travel outside the United States or something else, concerning your visa status, you should appeal to U.S. Citizenship and Immigration Services (USCIS). Also, you can direct your questions to the office at your educational institution that is responsible for services to international students. This office should be able to provide you with the answers you need or refer you to a person or office that can.
Every educational institution, that enrolls international students, has the office that is responsible for services to international students; it may be called the Office of International Services, the Office of International Education, the International Programs Office, or some other similar name. In order to avoid the violation of your status in the United States, be sure, that that office had reported about your arrival within the SEVIS system.
Additionally, the office that is responsible for services to international students in your college or university will answer all questions that concern immigration rules and regulations.