First of all, visa and I-20 (status) are separate entities. Ur visa is good for POE (port of entry) and ur I-20 is good for ur status.

As long as u maintain ur F1 status u sudn’t worry abt ur visa. If u are in status and still have classes to take, u can always extend ur I-20.

U can extend ur I-20 from current school or change ur school with new I-20 with current or new program.

-HS