How can i find a loan co-signer?

i really have to pay my tuition but i do not have anybody to because my father died and he was my source of income. how can i find a credit worthy person to help me with a loan or anyone who wants to help me with school please. i cannot drop out now i have come too far. and i am not an american citizen so it is harder for me to go back to my conutry and not have anything to show for it.