My wife applied NIW and I140 has been approved. Both of us filed I485 with her I140 at that time. I am on F1 OPT now and I will go to school again this September. Since my wife's I140 has been approved, do I need to get new F1 (or transfer F1) to start new school? Can I apply for EAD and use it to go to school? I am very confused now. Thanks for your help.