Arriving in the United States should be a smooth experience if you have everything ready.
The Form I-94, “Arrival/Departure Record” is a critical record. It shows that you have been legally admitted to the United States, the class of admission, and the authorized period of stay. It is very important that the information on the record is correct. Inconsistencies between the information on the Form I-94 and Student and Exchange Visitor Information System (SEVIS) records can reduce the chances of a successful systems interface. In particular, this can cause issues with status verification for Social Security numbers.
You have 30 days to enter the country before your official program start date, which is recorded in SEVIS. You must report to your school by the program start date listed on the Form I-20, “Certificate of Eligibility for Nonimmigrant Status” you received. This is one of the rules you agree to when you received your student or exchange visitor status. If you do not follow this rule, you are not maintaining your status.
It is best to contact your school immediately after entering the country so that there is no question of your arrival.