I have F2 VISA. I want to change my VISA to F1. I went to international office. A staff of the office told me that I could change my VISA in US. Is it possible? I know it is possible, but it take long time to issue F1. I want to start my study at this fall semester.
The staff said that I could save flight fee to Korea if I change it here and if I change VISA in Korea, I can lose even F2 and I should stay in Korea and I cannot come into US.
Which one is better?