No way you can come back once you leave here. And the bar is set to be 10 years.
You status is illegal now, but I think the school allow you to finish your degree, just no CPT, OPT, no nothing. You cann't get legal status even you find job in the future.
Consult a good immigration lawyer ASAP and try to reopen the case, keep all records between you and INS, good luck.