USA Student Visa
This F-1 visa, US student visa or study visa is granted only to students (for a full-time course only) and no permission to working outside the university it is valid normally for the period of study. The F visa is only for academic studies like BS, MS, MBA, Ph.D.
Only if the applicant has a valid F-1 visa stamped on the passport can enter US (on an F-1 visa).
At any time during the first year of study a student with an F-1 visa cannot work off-campus; however, after one year the U.S. Immigration and Naturalization Service (INS) may grant permission to accept off-campus employment (or 2 semesters during Internship).
For On-campus employment no permission is required (which can be maximum 20 hrs/week and 40 hrs/week in the summer semester (if not enrolled)).
You Need an admission letter from University to get a student visa ( a form called SEVIS I-20). In your country you will take an appointment with US consulate. Visa officer might check your documents/your ties with the home country and if you have enough funds to live and support your education.
Requirements for US Student visa (or F-1 visa)
List of SEVIS (SEVIS stands for Student and Exchange Visitor Information System.) approved schools
For F-1 visa, applicants must be sufficiently expert in English. English proficiency can be proved by tests like TOEFL/IELTS/GRE/GMAT. These tests are only required for non-native English speakers to pursue the course of study.
Admission letter is required (form SEVIS I-20) for a full-time course of study at an approved educational institution. to support living You should be able to prove that sufficient funds are available (like loans/cash) (for yourself and family (if anyone is coming with you)) and school expenses during the entire period of study in the United States (How to create funding documentation).
The visa officer also check if you have a strong reason to return to your home country.