S2 Q&A: The form asks Initial, Transfer, or Change of Status - which am I?
Transfer if you hold F-1 now, including on OPT - your SEVIS record moves over. Change of Status if you're in the US on another status (H-1B, L-1, B-2...) and will file to become F-1. Initial if you're outside the US and will enter on a new F-1 visa. The wrong box means the wrong kind of I-20, so tell me your status and I'll confirm.