You are encouraged to apply for your nonimmigrant student visa as soon as you have your I-20. To ensure you get an early and timely date you may apply at anytime. However, a student visa may be issued no more than 120 days prior to the start date mentioned on your I-20.

You may only enter the United States within 30 days of the beginning of the course of study stated on your I-20, regardless of when your visa was issued.

Yes. In general, you may apply to change your nonimmigrant visa status if you were lawfully admitted to the United States with a nonimmigrant visa, if your nonimmigrant status remains valid, if you have not violated the conditions of your status, and you have not committed any actions that would make you ineligible. For more details, please visit the USCIS website.

If you received an I-20 after scheduling your appointment, then you can inform the U.S. consular officer of the new I-20 at the time of the interview.

No. Once you are in the United States, you do not need to apply for a new visa because the visa is only for entry into the United States. Check with USCIS to determine if you need to adjust status. If you leave the country, however, you'll need to apply for the student visa in order to re-enter the United States.

Full-time students on F visas may seek on-campus employment not to exceed 20 hours per week. After the first year in student status, an applicant may apply for employment off campus with authorization from USCIS. Please contact your student advisor for further information.

The Student and Exchange Visitor Information System (SEVIS) program requires schools and exchange programs to verify the enrollment status of all new and continuing foreign students and exchange visitors. Student visa applicants are required to pay a SEVIS fee before a visa can be issued. Applicants are then required to provide the SEVIS I-901 fee receipt as proof of payment. The SEVIS website has more details.

Yes, they can apply for a Tourist visa.