The visa is a permit stamped inside your passport by an official of another country's consulate or embassy that enables you to enter that country. You must have a valid visa in your passport to enter the United States. A visa to enter the U.S. is only issued at a U.S. consulate outside of the United States. There is no way to obtain or renew a visa stamp in your passport while in the United States. Students must travel to their home country, Canada or Mexico to apply for and receive a visa. The most common type of visa issued for study in the U.S. is the F-1 visa.
Continuing Student - What is needed to renew my visa?
To renew your F-1 visa, you will need to submit the following documents to a U.S. Embassy or Consulate: