回复：学校建议不要寄i-539, 建议180天内离境，如何是好？

学校建议不要寄i-539, 建议180天内离境。说如果寄了i539，移民局就会 知道这件事，并留下记录，还会要求30天内离境，同时他们不出我的2019表。说如果180天内离境，通常不会留下记录。

可是出境不是要上交i94吗？是不是同样会被发现，并留下记录？
-You have to go outside US to get the J2 visa as soon as you can. Of course, USCIS will find out your unlawful presence. But if you leave US and get the J2 visa to come back, all of this record will be removed and nothing will affect you in the future. But if you leave US too late, it may affect you to get the J2 visa outside U.S. If you leave U.S. after 180 days form now on, you will be banned to enter U.S. within 3 years.