From your statement it seems like you are student in the USA and still studying. As far as know, if you are maintaining your student status (registered the courses as required by the university rules) you are not out of status even though the visa is expired in the passport. Visa stamp is only to enter the US. You should have stamped I-94 with D/S (duration of status) at the port of entry. So your I-20 maintains your visa while you are a student and in the US. But if you go out, then you will need valid visa in the passport to reentry.

Best suggestion is to contact international student center.