From my point, extension is one case. Chang of status is

two cases, you need to show your former status is legal. However, if you just change from H1b to F, it should be ok. But the problem is from March to June, you are out of status. And you must go back to home country to get your F1. However, if you keep your H1 until June, then you can do what you want to do

請您先登陸,再發跟帖!