-When your school applied for the OPT for you, they have already extended your F-1 status in the Form I-20. Do you have a copy of the I-20 for the OPT? If yes, you just checked it and you will find out the note in that I-20 written by your Internation Office.
還有沒有60天的GRACE PERIOD.
-Yes.
可不可以告學校
-If there is something wrong in the I-20, you can ask your school to fix it before the Semester closes.